173-507: The term " New World " is used to describe the majority of lands of Earth 's Western Hemisphere , particularly the Americas . The term arose in the early 16th century during Europe 's Age of Discovery , after Italian explorer Amerigo Vespucci published the Latin -language pamphlet Mundus Novus , presenting his conclusion that these lands (soon called America based on Amerigo's name ) constitute
346-516: A Genoese dialect ( Ligurian ) as his first language, though Columbus probably never wrote in it. His name in 15th-century Genoese was Cristoffa Corombo , in Italian, Cristoforo Colombo , and in Spanish Cristóbal Colón . In one of his writings, he says he went to sea at 14. In 1470, the family moved to Savona , where Domenico took over a tavern. Some modern authors have argued that he
519-533: A circumstellar disk , and then the planets grow out of that disk with the Sun. A nebula contains gas, ice grains, and dust (including primordial nuclides ). According to nebular theory , planetesimals formed by accretion , with the primordial Earth being estimated as likely taking anywhere from 70 to 100 million years to form. Estimates of the age of the Moon range from 4.5 Ga to significantly younger. A leading hypothesis
692-492: A common barycenter every 27.32 days relative to the background stars. When combined with the Earth–Moon system's common orbit around the Sun, the period of the synodic month , from new moon to new moon, is 29.53 days. Viewed from the celestial north pole , the motion of Earth, the Moon, and their axial rotations are all counterclockwise . Viewed from a vantage point above the Sun and Earth's north poles, Earth orbits in
865-524: A continent in that southern part; full of animals and more populous than our Europe, or Asia, or Africa, and even more temperate and pleasant than any other region known to us. Vespucci's letter was a publishing sensation in Europe that was immediately and repeatedly reprinted in several other countries. Peter Martyr, who had been writing and circulating private letters commenting on Columbus's discoveries since 1493, often shares credit with Vespucci for designating
1038-542: A counterclockwise direction about the Sun. The orbital and axial planes are not precisely aligned: Earth's axis is tilted some 23.44 degrees from the perpendicular to the Earth–Sun plane (the ecliptic ), and the Earth-Moon plane is tilted up to ±5.1 degrees against the Earth–Sun plane. Without this tilt, there would be an eclipse every two weeks, alternating between lunar eclipses and solar eclipses . The Hill sphere , or
1211-554: A degree of longitude along the equator) spanned 56.67 Arabic miles (equivalent to 66.2 nautical miles, 122.6 kilometers or 76.2 mi), but he did not realize that this was expressed in the Arabic mile (about 1,830 meters or 1.14 mi) rather than the shorter Roman mile (about 1,480 m) with which he was familiar. Columbus therefore estimated the size of the Earth to be about 75% of Eratosthenes's calculation. Third, most scholars of
1384-532: A five-week voyage across the ocean. On 7 October, the crew spotted "[i]mmense flocks of birds". On 11 October, Columbus changed the fleet's course to due west, and sailed through the night, believing land was soon to be found. At around 02:00 the following morning, a lookout on the Pinta , Rodrigo de Triana , spotted land. The captain of the Pinta , Martín Alonso Pinzón , verified the sight of land and alerted Columbus. Columbus later maintained that he had already seen
1557-420: A full rotation about its axis so that the Sun returns to the meridian . The orbital speed of Earth averages about 29.78 km/s (107,200 km/h; 66,600 mph), which is fast enough to travel a distance equal to Earth's diameter, about 12,742 km (7,918 mi), in seven minutes, and the distance from Earth to the Moon, 384,400 km (238,900 mi), in about 3.5 hours. The Moon and Earth orbit
1730-421: A globe-spanning mid-ocean ridge system. At Earth's polar regions , the ocean surface is covered by seasonally variable amounts of sea ice that often connects with polar land, permafrost and ice sheets , forming polar ice caps . Earth's land covers 29.2%, or 149 million km (58 million sq mi) of Earth's surface. The land surface includes many islands around the globe, but most of
1903-570: A large open ocean between China on the east side of the map, and the inchoate largely water-surrounded North American and South American discoveries on the western side of map. Out of uncertainty, they depicted a finger of the Asian land mass stretching across the top to the eastern edge of the map, suggesting it carried over into the western hemisphere. E.g. the Cantino Planisphere denotes Greenland as "Punta d'Asia"—"edge of Asia". Some maps, e.g.,
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#17330849749502076-841: A light on the land a few hours earlier, thereby claiming for himself the lifetime pension promised by Ferdinand and Isabella to the first person to sight land. Columbus called this island (in what is now the Bahamas) San Salvador (meaning "Holy Savior"); the natives called it Guanahani . Christopher Columbus's journal entry of 12 October 1492 states: I saw some who had marks of wounds on their bodies and I made signs to them asking what they were; and they showed me how people from other islands nearby came there and tried to take them, and how they defended themselves; and I believed and believe that they come here from tierra firme to take them captive. They should be good and intelligent servants, for I see that they say very quickly everything that
2249-566: A mistress in 1487, a 20-year-old orphan named Beatriz Enríquez de Arana . It is likely that Beatriz met Columbus when he was in Córdoba , a gathering place for Genoese merchants and where the court of the Catholic Monarchs was located at intervals. Beatriz, unmarried at the time, gave birth to Columbus's second son, Fernando Columbus , in July 1488, named for the monarch of Aragon. Columbus recognized
2422-473: A nearby smaller island, which he named Mariagalante , now a part of Guadeloupe and called Marie-Galante . Other islands named by Columbus on this voyage were Montserrat , Antigua , Saint Martin , the Virgin Islands , as well as many others. On 17 November, Columbus first sighted the eastern coast of the island of Puerto Rico , known to its native Taino people as Borikén . His fleet sailed along
2595-659: A new continent . This realization expanded the geographical horizon of earlier European geographers, who had thought that the world only included Afro-Eurasian lands. Africa , Asia , and Europe became collectively called the " Old World " of the Eastern Hemisphere , while the Americas were then referred to as "the fourth part of the world", or the "New World". Antarctica and Oceania are considered neither Old World nor New World lands, since they were only discovered by Europeans much later. They were associated instead with
2768-507: A variety of ways. Columbus often wrote about seeking gold in the log books of his voyages and writes about acquiring it "in such quantity that the sovereigns... will undertake and prepare to go conquer the Holy Sepulcher " in a fulfillment of Biblical prophecy . Columbus often wrote about converting all races to Christianity. Abbas Hamandi argues that Columbus was motivated by the hope of "[delivering] Jerusalem from Muslim hands" by "using
2941-507: A wool weaver who worked in Genoa and Savona , and owned a cheese stand at which young Christopher worked. His mother was Susanna Fontanarossa . He had three brothers— Bartholomew , Giovanni Pellegrino, and Giacomo (also called Diego) —as well as a sister, Bianchinetta. Bartholomew ran a cartography workshop in Lisbon for at least part of his adulthood. His native language is presumed to have been
3114-456: Is a chemically distinct silicate solid crust, which is underlain by a highly viscous solid mantle. The crust is separated from the mantle by the Mohorovičić discontinuity . The thickness of the crust varies from about 6 kilometres (3.7 mi) under the oceans to 30–50 km (19–31 mi) for the continents. The crust and the cold, rigid, top of the upper mantle are collectively known as
3287-483: Is approximately 9.8 m/s (32 ft/s ). Local differences in topography, geology, and deeper tectonic structure cause local and broad regional differences in Earth's gravitational field, known as gravity anomalies . The main part of Earth's magnetic field is generated in the core, the site of a dynamo process that converts the kinetic energy of thermally and compositionally driven convection into electrical and magnetic field energy. The field extends outwards from
3460-435: Is at least somewhat humid and covered by vegetation , while large sheets of ice at Earth's polar deserts retain more water than Earth's groundwater , lakes, rivers and atmospheric water combined. Earth's crust consists of slowly moving tectonic plates , which interact to produce mountain ranges, volcanoes , and earthquakes. Earth has a liquid outer core that generates a magnetosphere capable of deflecting most of
3633-517: Is contained in 3.45 billion-year-old Australian rocks showing fossils of microorganisms . During the Neoproterozoic , 1000 to 539 Ma , much of Earth might have been covered in ice. This hypothesis has been termed " Snowball Earth ", and it is of particular interest because it preceded the Cambrian explosion , when multicellular life forms significantly increased in complexity. Following
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#17330849749503806-452: Is farthest out from its center of mass at its equatorial bulge, the summit of the volcano Chimborazo in Ecuador (6,384.4 km or 3,967.1 mi) is its farthest point out. Parallel to the rigid land topography the ocean exhibits a more dynamic topography . To measure the local variation of Earth's topography, geodesy employs an idealized Earth producing a geoid shape. Such a shape
3979-516: Is gained if the ocean is idealized, covering Earth completely and without any perturbations such as tides and winds. The result is a smooth but irregular geoid surface, providing a mean sea level (MSL) as a reference level for topographic measurements. Earth's surface is the boundary between the atmosphere, and the solid Earth and oceans. Defined in this way, it has an area of about 510 million km (197 million sq mi). Earth can be divided into two hemispheres : by latitude into
4152-603: Is known that in the autumn of 1477, he sailed on a Portuguese ship from Galway to Lisbon, where he found his brother Bartholomew, and they continued trading for the Centurione family. Columbus based himself in Lisbon from 1477 to 1485. In 1478, the Centuriones sent Columbus on a sugar-buying trip to Madeira. He married Felipa Perestrello e Moniz , daughter of Bartolomeu Perestrello , a Portuguese nobleman of Lombard origin, who had been
4325-477: Is now Ghana . He married Portuguese noblewoman Filipa Moniz Perestrelo , who bore a son, Diego , and was based in Lisbon for several years. He later took a Castilian mistress, Beatriz Enríquez de Arana , who bore a son, Ferdinand . Largely self-educated, Columbus was knowledgeable in geography, astronomy, and history. He developed a plan to seek a western sea passage to the East Indies , hoping to profit from
4498-469: Is now named South America, that same map famously labels simply " America ". Martin Waldseemüller 's map of 1516 retreats considerably from his earlier map and back to classical authority, with the Asian land mass merging into North America, which he now calls Terra de Cuba Asie partis , and quietly drops the "America" label from South America, calling it merely Terra incognita . The western coast of
4671-501: Is now slightly longer than it was during the 19th century due to tidal deceleration , each day varies between 0 and 2 ms longer than the mean solar day. Earth's rotation period relative to the fixed stars , called its stellar day by the International Earth Rotation and Reference Systems Service (IERS), is 86,164.0989 seconds of mean solar time ( UT1 ), or 23 56 4.0989 . Earth's rotation period relative to
4844-612: Is rare, though the alternative spelling Gaia has become common due to the Gaia hypothesis , in which case its pronunciation is / ˈ ɡ aɪ . ə / rather than the more classical English / ˈ ɡ eɪ . ə / . There are a number of adjectives for the planet Earth. The word "earthly" is derived from "Earth". From the Latin Terra comes terran / ˈ t ɛr ə n / , terrestrial / t ə ˈ r ɛ s t r i ə l / , and (via French) terrene / t ə ˈ r iː n / , and from
5017-536: Is said to them; and I believe they would become Christians very easily, for it seemed to me that they had no religion. Our Lord pleasing, at the time of my departure I will take six of them from here to Your Highnesses in order that they may learn to speak. Columbus called the inhabitants of the lands that he visited Los Indios (Spanish for "Indians"). He initially encountered the Lucayan , Taíno , and Arawak peoples. Noting their gold ear ornaments, Columbus took some of
5190-477: Is that it was formed by accretion from material loosed from Earth after a Mars -sized object with about 10% of Earth's mass, named Theia , collided with Earth. It hit Earth with a glancing blow and some of its mass merged with Earth. Between approximately 4.1 and 3.8 Ga , numerous asteroid impacts during the Late Heavy Bombardment caused significant changes to the greater surface environment of
5363-453: Is the basis for the astronomical unit (AU) and is equal to roughly 8.3 light minutes or 380 times Earth's distance to the Moon . Earth orbits the Sun every 365.2564 mean solar days , or one sidereal year . With an apparent movement of the Sun in Earth's sky at a rate of about 1°/day eastward, which is one apparent Sun or Moon diameter every 12 hours. Due to this motion, on average it takes 24 hours—a solar day—for Earth to complete
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5536-580: Is the third planet from the Sun and the only astronomical object known to harbor life . This is enabled by Earth being an ocean world , the only one in the Solar System sustaining liquid surface water . Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust . The remaining 29.2% of Earth's crust is land, most of which is located in the form of continental landmasses within Earth's land hemisphere . Most of Earth's land
5709-457: Is tied to that of the Sun. Over the next 1.1 billion years , solar luminosity will increase by 10%, and over the next 3.5 billion years by 40%. Earth's increasing surface temperature will accelerate the inorganic carbon cycle , possibly reducing CO 2 concentration to levels lethally low for current plants ( 10 ppm for C4 photosynthesis ) in approximately 100–900 million years . A lack of vegetation would result in
5882-720: The Reconquista , an expensive war against the Moors in the Iberian Peninsula , were eager to obtain a competitive edge over other European countries in the quest for trade with the Indies. Columbus's project, though far-fetched, held the promise of such an advantage. Though Columbus was wrong about the number of degrees of longitude that separated Europe from the Far East and about the distance that each degree represented, he did take advantage of
6055-571: The Terra Australis that had been posited as a hypothetical southern continent. All of the New World countries use the Latin script as its official script. The Florentine explorer Amerigo Vespucci is usually credited for coming up with the term "New World" ( Mundus Novus ) for the Americas in his 1503 letter, giving it its popular cachet, although similar terms had been used and applied before him. The Venetian explorer Alvise Cadamosto used
6228-794: The Americas , each voyage being sponsored by the Crown of Castile . On his first voyage he reached the Americas, initiating the European exploration and colonization of the continent , as well as the Columbian exchange . His role in history is thus important to the Age of Discovery , Western history , and human history writ large. In Columbus's letter on the first voyage , published following his first return to Spain, he claimed that he had reached Asia, as previously described by Marco Polo and other Europeans. Over his subsequent voyages, Columbus refused to acknowledge that
6401-571: The Cape Route around Africa to Asia. Columbus had to wait until 1492 for King Ferdinand and Queen Isabella of Spain to support his voyage across the Atlantic to find gold, spices, a safer route to the East, and converts to Christianity. Carol Delaney and other commentators have argued that Columbus was a Christian millennialist and apocalypticist and that these beliefs motivated his quest for Asia in
6574-628: The Cape of Good Hope ). Columbus sought an audience with the monarchs Ferdinand II of Aragon and Isabella I of Castile , who had united several kingdoms in the Iberian Peninsula by marrying and now ruled together. On 1 May 1486, permission having been granted, Columbus presented his plans to Queen Isabella, who, in turn, referred it to a committee. The learned men of Spain, like their counterparts in Portugal, replied that Columbus had grossly underestimated
6747-503: The Ciguayos , the only natives who offered violent resistance during this voyage. The Ciguayos refused to trade the amount of bows and arrows that Columbus desired; in the ensuing clash one Ciguayo was stabbed in the buttocks and another wounded with an arrow in his chest. Because of these events, Columbus called the inlet the Golfo de Las Flechas ( Bay of Arrows ). Columbus headed for Spain on
6920-592: The Gulf of Paria implied that a previously unknown continent must lie behind it. Columbus proposes that the South American landmass is not a "fourth" continent, but rather the terrestrial paradise of Biblical tradition, a land allegedly known, but undiscovered, by Christendom . In another letter to the nurse of Prince John, written 1500, Columbus refers to having reached a "new heavens and world" ("nuevo cielo é mundo") and that he had placed "another world" ("otro mundo") under
7093-566: The Milky Way and orbits about 28,000 light-years from its center. It is about 20 light-years above the galactic plane in the Orion Arm . The axial tilt of Earth is approximately 23.439281° with the axis of its orbit plane, always pointing towards the Celestial Poles . Due to Earth's axial tilt, the amount of sunlight reaching any given point on the surface varies over the course of
New World - Misplaced Pages Continue
7266-573: The Mundus Novus letter in Lisbon and sent it to Lorenzo in Florence , with the famous opening paragraph: In passed days I wrote very fully to you of my return from new countries, which have been found and explored with the ships, at the cost and by the command of this Most Serene King of Portugal; and it is lawful to call it a new world, because none of these countries were known to our ancestors and to all who hear about them they will be entirely new. For
7439-572: The Niña , but a storm separated him from the Pinta, and forced the Niña to stop at the island of Santa Maria in the Azores. Half of his crew went ashore to say prayers of thanksgiving in a chapel for having survived the storm. But while praying, they were imprisoned by the governor of the island, ostensibly on suspicion of being pirates. After a two-day standoff, the prisoners were released, and Columbus again set sail for Spain. Another storm forced Columbus into
7612-722: The Pacific , North American , Eurasian , African , Antarctic , Indo-Australian , and South American . Other notable plates include the Arabian Plate , the Caribbean Plate , the Nazca Plate off the west coast of South America and the Scotia Plate in the southern Atlantic Ocean. The Australian Plate fused with the Indian Plate between 50 and 55 Ma . The fastest-moving plates are
7785-542: The West Indies with what returning sailors told him of the East Indies . Vespucci wrote a preliminary letter to Lorenzo, while anchored at Bezeguiche, which he sent back with the Portuguese fleet, which expressed a certain puzzlement about his conversations. Vespucci ultimately was convinced while on his mapping expedition of eastern Brazil from 1501 to 1502. After returning from Brazil in the spring of 1503, Vespucci authored
7958-419: The asthenosphere , the solid but less-viscous part of the upper mantle that can flow and move along with the plates. As the tectonic plates migrate, oceanic crust is subducted under the leading edges of the plates at convergent boundaries. At the same time, the upwelling of mantle material at divergent boundaries creates mid-ocean ridges. The combination of these processes recycles the oceanic crust back into
8131-415: The celestial equator , this is equivalent to an apparent diameter of the Sun or the Moon every two minutes; from Earth's surface, the apparent sizes of the Sun and the Moon are approximately the same. Earth orbits the Sun, making Earth the third-closest planet to the Sun and part of the inner Solar System . Earth's average orbital distance is about 150 million km (93 million mi), which
8304-517: The donatary captain of Porto Santo . In 1479 or 1480, Columbus's son Diego was born. Between 1482 and 1485, Columbus traded along the coasts of West Africa , reaching the Portuguese trading post of Elmina at the Guinea coast in present-day Ghana . Before 1484, Columbus returned to Porto Santo to find that his wife had died. He returned to Portugal to settle her estate and take Diego with him. He left Portugal for Castile in 1485, where he took
8477-410: The equatorial region receiving more sunlight than the polar regions) drive atmospheric and ocean currents , producing a global climate system with different climate regions , and a range of weather phenomena such as precipitation , allowing components such as nitrogen to cycle . Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in
8650-623: The fall of Constantinople to the Ottoman Empire in 1453, the Silk Road was closed to Christian traders. In 1474, the Florentine astronomer Paolo dal Pozzo Toscanelli suggested to King Afonso V of Portugal that sailing west across the Atlantic would be a quicker way to reach the Maluku (Spice) Islands, China , Japan and India than the route around Africa, but Afonso rejected his proposal. In
8823-916: The guava , papaya and pineapple . There are rare instances of overlap, e.g., the calabash (bottle-gourd), cotton , and yam are believed to have been domesticated separately in both the Old and New World, or their early forms possibly brought along by Paleo-Indians from Asia during the last glacial period . [REDACTED] Africa [REDACTED] Antarctica [REDACTED] Asia [REDACTED] Australia [REDACTED] Europe [REDACTED] North America [REDACTED] South America [REDACTED] Afro-Eurasia [REDACTED] Americas [REDACTED] Eurasia [REDACTED] Oceania [REDACTED] Africa [REDACTED] Eurasia [REDACTED] North America [REDACTED] Oceania [REDACTED] South America Earth Earth
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#17330849749508996-408: The ocean floor form the top of Earth's crust , which together with parts of the upper mantle form Earth's lithosphere . Earth's crust may be divided into oceanic and continental crust. Beneath the ocean-floor sediments, the oceanic crust is predominantly basaltic , while the continental crust may include lower density materials such as granite , sediments and metamorphic rocks. Nearly 75% of
9169-430: The precessing or moving mean March equinox (when the Sun is at 90° on the equator), is 86,164.0905 seconds of mean solar time (UT1) (23 56 4.0905 ) . Thus the sidereal day is shorter than the stellar day by about 8.4 ms. Apart from meteors within the atmosphere and low-orbiting satellites, the main apparent motion of celestial bodies in Earth's sky is to the west at a rate of 15°/h = 15'/min. For bodies near
9342-468: The sphere of gravitational influence , of Earth is about 1.5 million km (930,000 mi) in radius. This is the maximum distance at which Earth's gravitational influence is stronger than that of the more distant Sun and planets. Objects must orbit Earth within this radius, or they can become unbound by the gravitational perturbation of the Sun. Earth, along with the Solar System, is situated in
9515-553: The trade winds , which would prove to be the key to his successful navigation of the Atlantic Ocean. He planned to first sail to the Canary Islands before continuing west with the northeast trade wind. Part of the return to Spain would require traveling against the wind using an arduous sailing technique called beating , during which progress is made very slowly. To effectively make the return voyage, Columbus would need to follow
9688-510: The turkey were originally domesticated by pre-Columbian peoples in Mesoamerica . Agriculturalists in the Andean region of South America brought forth the cassava , peanut , potato , quinoa and domesticated animals like the alpaca , guinea pig and llama . Other New World crops include the sweetpotato , cashew , cocoa , rubber , sunflower , tobacco , and vanilla , and fruits like
9861-479: The "discoverer of the new globe" ("Colonus ille novi orbis repertor"). A year later, on 20 October 1494, Peter Martyr again refers to the marvels of the New Globe ("Novo Orbe") and the " Western Hemisphere " ("ab occidente hemisphero"). In Columbus's 1499 letter to the Catholic Monarchs of Spain, reporting the results of his third voyage, he relates how the massive waters of South America's Orinoco delta rushing into
10034-464: The "last ice age", covered large parts of the continents, to the middle latitudes, in ice and ended about 11,700 years ago. Chemical reactions led to the first self-replicating molecules about four billion years ago. A half billion years later, the last common ancestor of all current life arose. The evolution of photosynthesis allowed the Sun's energy to be harvested directly by life forms. The resultant molecular oxygen ( O 2 ) accumulated in
10207-401: The 1480s, Columbus and his brother proposed a plan to reach the East Indies by sailing west. Columbus supposedly wrote to Toscanelli in 1481 and received encouragement, along with a copy of a map the astronomer had sent Afonso implying that a westward route to Asia was possible. Columbus's plans were complicated by Bartolomeu Dias 's rounding of the Cape of Good Hope in 1488, which suggested
10380-479: The 1506 Contarini–Rosselli map and the 1508 Johannes Ruysch map, bowing to Ptolemaic authority and Columbus's assertions, have the northern Asian landmass stretching well into the western hemisphere and merging with known North America, Labrador, Newfoundland, etc. These maps place the island of Japan near Cuba and leave the South American continent—Vespucci's "New World" proper—detached and floating below by itself. The Waldseemüller map of 1507, which accompanied
10553-416: The Americas as a new world. Peter Martyr used the term Orbe Novo , meaning "New Globe", in the title of his history of the discovery of the Americas, which began appearing in 1511. The Vespucci passage above applied the "New World" label to merely the continental landmass of South America . At the time, most of the continent of North America was not yet discovered, and Vespucci's comments did not eliminate
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#173308497495010726-528: The Americas remained unclear. That there must be a large ocean between Asia and the Americas was implied by the known existence of vast continuous sea along the coasts of East Asia . Given the size of the Earth as calculated by Eratosthenes this left a large space between Asia and the newly discovered lands. Even prior to Vespucci, several maps, e.g. the Cantino planisphere of 1502 and the Canerio map of 1504, placed
10899-445: The Americas until they were introduced by post-Columbian contact in the 1490s. Many common crops were originally domesticated in the Americas before they spread worldwide after Columbian contact, and are still often referred to as " New World crops ". Common beans ( phaseolus ), maize , and squash —the " three sisters "—as well as the avocado , tomato , and wide varieties of capsicum ( bell pepper , chili pepper , etc.), and
11072-761: The Americas, to distinguish them from their counterparts in the "Old World" (Europe, Africa and Asia)—e.g., New World monkeys , New World vultures , New World warblers . The label is also often used in agriculture. Asia, Africa, and Europe share a common agricultural history stemming from the Neolithic Revolution , and the same domesticated plants and animals spread through these three continents thousands of years ago, making them largely indistinct and useful to classify together as "Old World". Common Old World crops, e.g., barley , lentils , oats , peas , rye , wheat , and domesticated animals, e.g., cattle , chickens , goats , horses , pigs , sheep , did not exist in
11245-420: The Americas. He sailed with nearly 1,500 men, including sailors, soldiers, priests, carpenters, stonemasons, metalworkers, and farmers. Among the expedition members were Alvarez Chanca , a physician who wrote a detailed account of the second voyage; Juan Ponce de León, the first governor of Puerto Rico and Florida; the father of Bartolomé de las Casas; Juan de la Cosa , a cartographer who is credited with making
11418-528: The April 1492 " Capitulations of Santa Fe ", King Ferdinand and Queen Isabella promised Columbus that if he succeeded he would be given the rank of Admiral of the Ocean Sea and appointed Viceroy and Governor of all the new lands he might claim for Spain. He had the right to nominate three persons, from whom the sovereigns would choose one, for any office in the new lands. He would be entitled to 10% ( diezmo ) of all
11591-523: The Arawaks prisoner and insisted that they guide him to the source of the gold. Columbus did not believe he needed to create a fortified outpost, writing, "the people here are simple in war-like matters ... I could conquer the whole of them with fifty men, and govern them as I pleased." The Taínos told Columbus that another indigenous tribe, the Caribs , were fierce warriors and cannibals , who made frequent raids on
11764-464: The Atlantic coast of North America in what is present-day Canada and the United States . The term "New World" is still commonly employed when discussing historic spaces, particularly the voyages of Christopher Columbus and the subsequent European colonization of the Americas . It has been framed as being problematic for applying a colonial perspective of discovery and not doing justice to either
11937-479: The Cambrian explosion, 535 Ma , there have been at least five major mass extinctions and many minor ones. Apart from the proposed current Holocene extinction event, the most recent was 66 Ma , when an asteroid impact triggered the extinction of non-avian dinosaurs and other large reptiles, but largely spared small animals such as insects, mammals , lizards and birds. Mammalian life has diversified over
12110-457: The Canary Islands west to Japan; the actual distance is 10,600 nmi (19,600 km; 12,200 mi). No ship in the 15th century could have carried enough food and fresh water for such a long voyage, and the dangers involved in navigating through the uncharted ocean would have been formidable. Most European navigators reasonably concluded that a westward voyage from Europe to Asia was unfeasible. The Catholic Monarchs, however, having completed
12283-618: The Castilian crown, known as the pleitos colombinos , alleging that the Crown had illegally reneged on its contractual obligations to Columbus and his heirs. The Columbus family had some success in their first litigation, as a judgment of 1511 confirmed Diego's position as viceroy but reduced his powers. Diego resumed litigation in 1512, which lasted until 1536, and further disputes initiated by heirs continued until 1790. Between 1492 and 1504, Columbus completed four round-trip voyages between Spain and
12456-704: The Catholic Monarchs of Spain. They were replaced by the Treaty of Tordesillas of 1494. The two earliest published copies of Columbus's letter on the first voyage aboard the Niña were donated in 2017 by the Jay I. Kislak Foundation to the University of Miami library in Coral Gables, Florida , where they are housed. On 24 September 1493, Columbus sailed from Cádiz with 17 ships, and supplies to establish permanent colonies in
12629-637: The Earth. Terra is also the name of the planet in some Romance languages , languages that evolved from Latin , like Italian and Portuguese , while in other Romance languages the word gave rise to names with slightly altered spellings, like the Spanish Tierra and the French Terre . The Latinate form Gæa or Gaea ( English: / ˈ dʒ iː . ə / ) of the Greek poetic name Gaia ( Γαῖα ; Ancient Greek : [ɡâi̯.a] or [ɡâj.ja] )
12802-401: The Earth; and the number of miles or leagues in a degree of longitude , which was possible to deduce from the theory of the relationship between the size of the surfaces of water and the land as held by the followers of Aristotle in medieval times. From Pierre d'Ailly 's Imago Mundi (1410), Columbus learned of Alfraganus 's estimate that a degree of latitude (equal to approximately
12975-452: The Far East. As a colonial governor, Columbus was accused by some of his contemporaries of significant brutality and removed from the post. Columbus's strained relationship with the Crown of Castile and its colonial administrators in America led to his arrest and removal from Hispaniola in 1500, and later to protracted litigation over the privileges he and his heirs claimed were owed to them by
13148-430: The Indies "), and consequently came up with alternative names to refer to them. Only a few weeks after Columbus's return from his first voyage, Martyr wrote letters referring to Columbus's discovered lands as the "western antipodes" ("antipodibus occiduis", letter of 14 May 1493), the "new hemisphere of the earth" ("novo terrarum hemisphaerio", 13 September 1493). In a letter dated 1 November 1493, he refers to Columbus as
13321-441: The Indies implausible. Columbus had left for France when Ferdinand intervened, first sending Talavera and Bishop Diego Deza to appeal to the queen. Isabella was finally convinced by the king's clerk Luis de Santángel , who argued that Columbus would take his ideas elsewhere, and offered to help arrange the funding. Isabella then sent a royal guard to fetch Columbus, who had traveled 2 leagues (over 10 km) toward Córdoba. In
13494-527: The Latin Tellus comes tellurian / t ɛ ˈ l ʊər i ə n / and telluric . The oldest material found in the Solar System is dated to 4.5682 +0.0002 −0.0004 Ga (billion years) ago. By 4.54 ± 0.04 Ga the primordial Earth had formed. The bodies in the Solar System formed and evolved with the Sun. In theory, a solar nebula partitions a volume out of a molecular cloud by gravitational collapse, which begins to spin and flatten into
13667-426: The Moon and, by inference, to that of Earth. Earth's atmosphere and oceans were formed by volcanic activity and outgassing . Water vapor from these sources condensed into the oceans, augmented by water and ice from asteroids, protoplanets , and comets . Sufficient water to fill the oceans may have been on Earth since it formed. In this model, atmospheric greenhouse gases kept the oceans from freezing when
13840-520: The New World, including the Pacific Ocean , was discovered in 1513 by Vasco Núñez de Balboa , twenty years after Columbus' initial voyage. It was a few more years before the voyage of Ferdinand Magellan 's between 1519 and 1522 determined that the Pacific Ocean definitely formed a single large body of water that separates Asia from the Americas. Several years later, the Pacific Coast of North America
14013-416: The Solar System . Of the four rocky planets , it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it , taking a year (about 365.25 days) to complete one revolution. Earth rotates around its own axis in slightly less than a day (in about 23 hours and 56 minutes). Earth's axis of rotation is tilted with respect to the perpendicular to its orbital plane around
14186-458: The Solar System's planetary-sized objects, Earth is the object with the highest density . Earth's mass is approximately 5.97 × 10 kg ( 5.970 Yg ). It is composed mostly of iron (32.1% by mass ), oxygen (30.1%), silicon (15.1%), magnesium (13.9%), sulfur (2.9%), nickel (1.8%), calcium (1.5%), and aluminium (1.4%), with the remaining 1.2% consisting of trace amounts of other elements. Due to gravitational separation ,
14359-663: The Solar System, formed 4.5 billion years ago from gas and dust in the early Solar System . During the first billion years of Earth's history , the ocean formed and then life developed within it. Life spread globally and has been altering Earth's atmosphere and surface, leading to the Great Oxidation Event two billion years ago. Humans emerged 300,000 years ago in Africa and have spread across every continent on Earth. Humans depend on Earth's biosphere and natural resources for their survival, but have increasingly impacted
14532-552: The Spanish crown sent him 20,000 maravedis to buy new clothes and instructions to return to the Spanish court for renewed discussions. Columbus waited at King Ferdinand's camp until Ferdinand and Isabella conquered Granada , the last Muslim stronghold on the Iberian Peninsula, in January 1492. A council led by Isabella's confessor, Hernando de Talavera , found Columbus's proposal to reach
14705-403: The Sun when the star reaches its maximum radius, otherwise, with tidal effects, it may enter the Sun's atmosphere and be vaporized. Earth has a rounded shape , through hydrostatic equilibrium , with an average diameter of 12,742 kilometres (7,918 mi), making it the fifth largest planetary sized and largest terrestrial object of the Solar System . Due to Earth's rotation it has
14878-461: The Sun, producing seasons . Earth is orbited by one permanent natural satellite , the Moon , which orbits Earth at 384,400 km (1.28 light seconds) and is roughly a quarter as wide as Earth. The Moon's gravity helps stabilize Earth's axis, causes tides and gradually slows Earth's rotation . Tidal locking has made the Moon always face Earth with the same side. Earth, like most other bodies in
15051-504: The Taínos, often capturing their women, although this may have been a belief perpetuated by the Spaniards to justify enslaving them. Columbus also explored the northeast coast of Cuba, where he landed on 28 October. On the night of 26 November, Martín Alonso Pinzón took the Pinta on an unauthorized expedition in search of an island called "Babeque" or "Baneque", which the natives had told him
15224-721: The Western Hemisphere bear his name , including the South American country of Colombia , the Canadian province of British Columbia , the American city Columbus, Ohio , and the United States capital, the District of Columbia . Columbus's early life is obscure, but scholars believe he was born in the Republic of Genoa between 25 August and 31 October 1451. His father was Domenico Colombo ,
15397-425: The atmosphere and due to interaction with ultraviolet solar radiation, formed a protective ozone layer ( O 3 ) in the upper atmosphere. The incorporation of smaller cells within larger ones resulted in the development of complex cells called eukaryotes . True multicellular organisms formed as cells within colonies became increasingly specialized. Aided by the absorption of harmful ultraviolet radiation by
15570-426: The atmosphere, particularly carbon dioxide (CO 2 ), creates the conditions for both liquid surface water and water vapor to persist via the capturing of energy from the Sun's light . This process maintains the current average surface temperature of 14.76 °C (58.57 °F), at which water is liquid under normal atmospheric pressure. Differences in the amount of captured energy between geographic regions (as with
15743-572: The boy as his offspring. Columbus entrusted his older, legitimate son Diego to take care of Beatriz and pay the pension set aside for her following his death, but Diego was negligent in his duties. Columbus learned Latin , Portuguese, and Castilian. He read widely about astronomy, geography, and history, including the works of Ptolemy , Pierre d'Ailly 's Imago Mundi , the travels of Marco Polo and Sir John Mandeville , Pliny 's Natural History , and Pope Pius II 's Historia rerum ubique gestarum . According to historian Edmund Morgan , Columbus
15916-450: The center, the temperature may be up to 6,000 °C (10,830 °F), and the pressure could reach 360 GPa (52 million psi ). Because much of the heat is provided by radioactive decay, scientists postulate that early in Earth's history, before isotopes with short half-lives were depleted, Earth's heat production was much higher. At approximately 3 Gyr , twice the present-day heat would have been produced, increasing
16089-542: The chief of the navigation of Spain. Although the proceedings of the Toro-Burgos conferences are missing, it is almost certain that Vespucci articulated his recent 'New World' thesis to his fellow navigators there. During these conferences, Spanish officials seem to have accepted that the Antilles and the known stretch of Central America were not the Indies as they had hoped. Though Columbus still insisted they were. They set out
16262-454: The continental crust , particularly during the early stages of Earth's history. New continental crust forms as a result of plate tectonics , a process ultimately driven by the continuous loss of heat from Earth's interior. Over the period of hundreds of millions of years, tectonic forces have caused areas of continental crust to group together to form supercontinents that have subsequently broken apart. At approximately 750 Ma , one of
16435-616: The continental surfaces are covered by sedimentary rocks, although they form about 5% of the mass of the crust. Earth's surface topography comprises both the topography of the ocean surface , and the shape of Earth's land surface. The submarine terrain of the ocean floor has an average bathymetric depth of 4 km, and is as varied as the terrain above sea level. Earth's surface is continually being shaped by internal plate tectonic processes including earthquakes and volcanism ; by weathering and erosion driven by ice, water, wind and temperature; and by biological processes including
16608-419: The core are chaotic; the magnetic poles drift and periodically change alignment. This causes secular variation of the main field and field reversals at irregular intervals averaging a few times every million years. The most recent reversal occurred approximately 700,000 years ago. The extent of Earth's magnetic field in space defines the magnetosphere . Ions and electrons of the solar wind are deflected by
16781-527: The core is primarily composed of the denser elements: iron (88.8%), with smaller amounts of nickel (5.8%), sulfur (4.5%), and less than 1% trace elements. The most common rock constituents of the crust are oxides . Over 99% of the crust is composed of various oxides of eleven elements, principally oxides containing silicon (the silicate minerals ), aluminium, iron, calcium, magnesium, potassium, or sodium. The major heat-producing isotopes within Earth are potassium-40 , uranium-238 , and thorium-232 . At
16954-463: The core, through the mantle, and up to Earth's surface, where it is, approximately, a dipole . The poles of the dipole are located close to Earth's geographic poles. At the equator of the magnetic field, the magnetic-field strength at the surface is 3.05 × 10 T , with a magnetic dipole moment of 7.79 × 10 Am at epoch 2000, decreasing nearly 6% per century (although it still remains stronger than its long time average). The convection movements in
17127-497: The crown. Columbus's expeditions inaugurated a period of exploration, conquest, and colonization that lasted for centuries, thus bringing the Americas into the European sphere of influence. The transfer of plants, animals, precious metals, culture, human populations, technology, diseases, and ideas between the Old World and New World that followed his first voyage are known as the Columbian exchange , named after him. These events and
17300-503: The curving trade winds northeastward to the middle latitudes of the North Atlantic, where he would be able to catch the " westerlies " that blow eastward to the coast of Western Europe. The navigational technique for travel in the Atlantic appears to have been exploited first by the Portuguese, who referred to it as the volta do mar ('turn of the sea'). Through his marriage to his first wife, Felipa Perestrello, Columbus had access to
17473-524: The days shorter. Above the Arctic Circle and below the Antarctic Circle there is no daylight at all for part of the year, causing a polar night , and this night extends for several months at the poles themselves. These same latitudes also experience a midnight sun , where the sun remains visible all day. By astronomical convention, the four seasons can be determined by the solstices—the points in
17646-441: The destructive solar winds and cosmic radiation . Earth has a dynamic atmosphere , which sustains Earth's surface conditions and protects it from most meteoroids and UV-light at entry . It has a composition of primarily nitrogen and oxygen . Water vapor is widely present in the atmosphere, forming clouds that cover most of the planet. The water vapor acts as a greenhouse gas and, together with other greenhouse gases in
17819-408: The distance to Asia. They pronounced the idea impractical and advised the Catholic Monarchs to pass on the proposed venture. To keep Columbus from taking his ideas elsewhere, and perhaps to keep their options open, the sovereigns gave him an allowance, totaling about 14,000 maravedis for the year, or about the annual salary of a sailor. In May 1489, the queen sent him another 10,000 maravedis , and
17992-525: The dominion of the Kings of Spain. The term "New World" ( Mundus Novus ) was coined in Spring 1503 by Amerigo Vespucci in a letter written to his friend and former patron Lorenzo di Pier Francesco de' Medici , which was published in Latin ) in 1503–04 under the title Mundus Novus . Vespucci's letter contains the first explicit articulation in print of the hypothesis that the lands discovered by European navigators to
18165-605: The earliest known supercontinents, Rodinia , began to break apart. The continents later recombined to form Pannotia at 600–540 Ma , then finally Pangaea , which also began to break apart at 180 Ma . The most recent pattern of ice ages began about 40 Ma , and then intensified during the Pleistocene about 3 Ma . High- and middle-latitude regions have since undergone repeated cycles of glaciation and thaw, repeating about every 21,000, 41,000 and 100,000 years. The Last Glacial Period , colloquially called
18338-505: The east than Japan, including the mythical Antillia , which he thought might lie not much farther to the west than the Azores , and the distance westward from the Canary Islands to the Indies as only 68 degrees, equivalent to 3,080 nmi (5,700 km; 3,540 mi) (a 58% error). Based on his sources, Columbus estimated a distance of 2,400 nmi (4,400 km; 2,800 mi) from
18511-462: The effects which persist to the present are often cited as the beginning of the modern era . Columbus was widely celebrated in the centuries after his death, but public perception fractured in the 21st century due to greater attention to the harms committed under his governance, particularly the beginning of the depopulation of Hispaniola's indigenous Taíno people, caused by Old World diseases and mistreatment, including slavery . Many places in
18684-544: The equally large area of land under permafrost ) or deserts (33%). The pedosphere is the outermost layer of Earth's land surface and is composed of soil and subject to soil formation processes. Soil is crucial for land to be arable. Earth's total arable land is 10.7% of the land surface, with 1.3% being permanent cropland. Earth has an estimated 16.7 million km (6.4 million sq mi) of cropland and 33.5 million km (12.9 million sq mi) of pastureland. The land surface and
18857-422: The famous Cosmographiae Introductio volume, which includes reprints of Vespucci's letters, comes closest to modernity by placing a completely open sea, with no stretching land fingers, between Asia on the eastern side and the New World. It is represented two times in the same map in a different way: with and without a sea passage in the middle of what is now named Central America on the western side—which, on what
19030-494: The first world map depicting the New World ; and Columbus's youngest brother Diego. The fleet stopped at the Canary Islands to take on more supplies, and set sail again on 7 October, deliberately taking a more southerly course than on the first voyage. On 3 November, they arrived in the Windward Islands ; the first island they encountered was named Dominica by Columbus, but not finding a good harbor there, they anchored off
19203-526: The first voyage , probably dispatched to the Spanish court upon arrival in Lisbon, was instrumental in spreading the news throughout Europe about his voyage. Almost immediately after his arrival in Spain, printed versions began to appear, and word of his voyage spread rapidly. Most people initially believed that he had reached Asia. The Bulls of Donation , three papal bulls of Pope Alexander VI delivered in 1493, purported to grant overseas territories to Portugal and
19376-405: The grounds that Columbus's estimate for a voyage of 2,400 nmi was only a quarter of what it should have been. In 1488, Columbus again appealed to the court of Portugal, and John II again granted him an audience. That meeting also proved unsuccessful, in part because not long afterwards Bartolomeu Dias returned to Portugal with news of his successful rounding of the southern tip of Africa (near
19549-638: The growth and decomposition of biomass into soil . Earth's mechanically rigid outer layer of Earth's crust and upper mantle , the lithosphere , is divided into tectonic plates . These plates are rigid segments that move relative to each other at one of three boundaries types: at convergent boundaries , two plates come together; at divergent boundaries , two plates are pulled apart; and at transform boundaries , two plates slide past one another laterally. Along these plate boundaries, earthquakes, volcanic activity , mountain-building , and oceanic trench formation can occur. The tectonic plates ride on top of
19722-404: The heat in Earth is lost through plate tectonics, by mantle upwelling associated with mid-ocean ridges . The final major mode of heat loss is through conduction through the lithosphere, the majority of which occurs under the oceans. The gravity of Earth is the acceleration that is imparted to objects due to the distribution of mass within Earth. Near Earth's surface, gravitational acceleration
19895-419: The historic or geographic complexity of the world. It is argued that both 'worlds' and the age of Western colonialism rather entered a new stage, as in the ' modern world '. In wine terminology , "New World" uses a particular definition. " New World wines " include not only North American and South American wines, but also those from South Africa , Australia , New Zealand , and all other locations outside
20068-503: The interpreter Luis de Torres , and founded the settlement of La Navidad , in present-day Haiti . Columbus took more natives prisoner and continued his exploration. He kept sailing along the northern coast of Hispaniola with a single ship until he encountered Pinzón and the Pinta on 6 January. On 13 January 1493, Columbus made his last stop of this voyage in the Americas, in the Bay of Rincón in northeast Hispaniola. There he encountered
20241-580: The island's southern coast for a whole day, before making landfall on its northwestern coast at the Bay of Añasco , early on 19 November. Upon landing, Columbus christened the island San Juan Bautista after John the Baptist , and remained anchored there for two days from 20 to 21 November, filling the water casks of the ships in his fleet. On 22 November, Columbus returned to Hispaniola to visit La Navidad in modern-day Haiti , where 39 Spaniards had been left during
20414-406: The land surface is taken by the four continental landmasses , which are (in descending order): Africa-Eurasia , America (landmass) , Antarctica , and Australia (landmass) . These landmasses are further broken down and grouped into the continents . The terrain of the land surface varies greatly and consists of mountains, deserts , plains , plateaus , and other landforms . The elevation of
20587-508: The land surface varies from a low point of −418 m (−1,371 ft) at the Dead Sea , to a maximum altitude of 8,848 m (29,029 ft) at the top of Mount Everest . The mean height of land above sea level is about 797 m (2,615 ft). Land can be covered by surface water , snow, ice, artificial structures or vegetation. Most of Earth's land hosts vegetation, but considerable amounts of land are ice sheets (10%, not including
20760-480: The lands he visited and claimed for Spain were not part of Asia, in the face of mounting evidence to the contrary. This might explain, in part, why the American continent was named after the Florentine explorer Amerigo Vespucci —who received credit for recognizing it as a " New World "—and not after Columbus. On the evening of 3 August 1492, Columbus departed from Palos de la Frontera with three ships. The largest
20933-399: The lithosphere, which is divided into independently moving tectonic plates. Beneath the lithosphere is the asthenosphere , a relatively low-viscosity layer on which the lithosphere rides. Important changes in crystal structure within the mantle occur at 410 and 660 km (250 and 410 mi) below the surface, spanning a transition zone that separates the upper and lower mantle. Beneath
21106-410: The loss of oxygen in the atmosphere, making current animal life impossible. Due to the increased luminosity, Earth's mean temperature may reach 100 °C (212 °F) in 1.5 billion years, and all ocean water will evaporate and be lost to space, which may trigger a runaway greenhouse effect , within an estimated 1.6 to 3 billion years. Even if the Sun were stable, a fraction of the water in
21279-456: The lowercase when it is preceded by "the", such as "the atmosphere of the earth". It almost always appears in lowercase in colloquial expressions such as "what on earth are you doing?" The name Terra / ˈ t ɛr ə / occasionally is used in scientific writing and especially in science fiction to distinguish humanity's inhabited planet from others, while in poetry Tellus / ˈ t ɛ l ə s / has been used to denote personification of
21452-532: The lucrative spice trade . After the Granada War , and Columbus's persistent lobbying in multiple kingdoms, the Catholic Monarchs, Queen Isabella I and King Ferdinand II , agreed to sponsor a journey west. Columbus left Castile in August 1492 with three ships and made landfall in the Americas on 12 October, ending the period of human habitation in the Americas now referred to as the pre-Columbian era . His landing place
21625-497: The magnetosphere. During magnetic storms and substorms , charged particles can be deflected from the outer magnetosphere and especially the magnetotail, directed along field lines into Earth's ionosphere , where atmospheric atoms can be excited and ionized, causing an aurora . Earth's rotation period relative to the Sun—its mean solar day—is 86,400 seconds of mean solar time ( 86,400.0025 SI seconds ). Because Earth's solar day
21798-409: The magnetosphere; solar wind pressure compresses the day-side of the magnetosphere, to about 10 Earth radii, and extends the night-side magnetosphere into a long tail. Because the velocity of the solar wind is greater than the speed at which waves propagate through the solar wind, a supersonic bow shock precedes the day-side magnetosphere within the solar wind. Charged particles are contained within
21971-478: The magnetosphere; the plasmasphere is defined by low-energy particles that essentially follow magnetic field lines as Earth rotates. The ring current is defined by medium-energy particles that drift relative to the geomagnetic field, but with paths that are still dominated by the magnetic field, and the Van Allen radiation belts are formed by high-energy particles whose motion is essentially random, but contained in
22144-417: The mantle, an extremely low viscosity liquid outer core lies above a solid inner core . Earth's inner core may be rotating at a slightly higher angular velocity than the remainder of the planet, advancing by 0.1–0.5° per year, although both somewhat higher and much lower rates have also been proposed. The radius of the inner core is about one-fifth of that of Earth. The density increases with depth. Among
22317-600: The mantle. Due to this recycling, most of the ocean floor is less than 100 Ma old. The oldest oceanic crust is located in the Western Pacific and is estimated to be 200 Ma old. By comparison, the oldest dated continental crust is 4,030 Ma , although zircons have been found preserved as clasts within Eoarchean sedimentary rocks that give ages up to 4,400 Ma , indicating that at least some continental crust existed at that time. The seven major plates are
22490-548: The modern oceans will descend to the mantle , due to reduced steam venting from mid-ocean ridges. The Sun will evolve to become a red giant in about 5 billion years . Models predict that the Sun will expand to roughly 1 AU (150 million km; 93 million mi), about 250 times its present radius. Earth's fate is less clear. As a red giant, the Sun will lose roughly 30% of its mass, so, without tidal effects, Earth will move to an orbit 1.7 AU (250 million km; 160 million mi) from
22663-399: The mother of Thor . Historically, "Earth" has been written in lowercase. Beginning with the use of Early Middle English , its definite sense as "the globe" was expressed as "the earth". By the era of Early Modern English , capitalization of nouns began to prevail , and the earth was also written the Earth , particularly when referenced along with other heavenly bodies. More recently,
22836-424: The name is sometimes simply given as Earth , by analogy with the names of the other planets , though "earth" and forms with "the earth" remain common. House styles now vary: Oxford spelling recognizes the lowercase form as the more common, with the capitalized form an acceptable variant. Another convention capitalizes "Earth" when appearing as a name, such as a description of the "Earth's atmosphere", but employs
23009-463: The nautical charts and logs that had belonged to her deceased father, Bartolomeu Perestrello , who had served as a captain in the Portuguese navy under Prince Henry the Navigator . In the mapmaking shop where he worked with his brother Bartholomew, Columbus also had ample opportunity to hear the stories of old seamen about their voyages to the western seas, but his knowledge of the Atlantic wind patterns
23182-439: The new goal for Spanish explorers: find a sea passage or strait through the Americas, a path to Asia proper. The term New World was not universally accepted, entering English only relatively late, and has more recently been subject to criticism . While it became generally accepted after Amerigo Vespucci that Christopher Columbus ' discoveries were not Asia but a "New World", the geographic relationship between Europe and
23355-425: The newly forming Sun had only 70% of its current luminosity . By 3.5 Ga , Earth's magnetic field was established, which helped prevent the atmosphere from being stripped away by the solar wind . As the molten outer layer of Earth cooled it formed the first solid crust , which is thought to have been mafic in composition. The first continental crust , which was more felsic in composition, formed by
23528-403: The northern coast of South America in 1498, and the east coast of Central America in 1502. Many names he gave to geographical features, particularly islands, are still in use. He gave the name indios ("Indians") to the indigenous peoples he encountered. The extent to which he was aware the Americas were a wholly separate landmass is uncertain; he never clearly renounced his belief he had reached
23701-586: The ocean may have covered Earth completely. The world ocean is commonly divided into the Pacific Ocean, Atlantic Ocean, Indian Ocean, Antarctic or Southern Ocean , and Arctic Ocean, from largest to smallest. The ocean covers Earth's oceanic crust , with the shelf seas covering the shelves of the continental crust to a lesser extent. The oceanic crust forms large oceanic basins with features like abyssal plains , seamounts , submarine volcanoes , oceanic trenches , submarine canyons , oceanic plateaus , and
23874-648: The oceanic plates, with the Cocos Plate advancing at a rate of 75 mm/a (3.0 in/year) and the Pacific Plate moving 52–69 mm/a (2.0–2.7 in/year). At the other extreme, the slowest-moving plate is the South American Plate, progressing at a typical rate of 10.6 mm/a (0.42 in/year). Earth's interior, like that of the other terrestrial planets, is divided into layers by their chemical or physical ( rheological ) properties. The outer layer
24047-400: The opinion of the ancients was, that the greater part of the world beyond the equinoctial line to the south was not land, but only sea, which they have called the Atlantic; and even if they have affirmed that any continent is there, they have given many reasons for denying it is inhabited. But this opinion is false, and entirely opposed to the truth. My last voyage has proved it, for I have found
24220-581: The orbit of maximum axial tilt toward or away from the Sun—and the equinoxes , when Earth's rotational axis is aligned with its orbital axis. In the Northern Hemisphere, winter solstice currently occurs around 21 December; summer solstice is near 21 June, spring equinox is around 20 March and autumnal equinox is about 22 or 23 September. In the Southern Hemisphere, the situation is reversed, with
24393-625: The ozone layer, life colonized Earth's surface. Among the earliest fossil evidence for life is microbial mat fossils found in 3.48 billion-year-old sandstone in Western Australia , biogenic graphite found in 3.7 billion-year-old metasedimentary rocks in Western Greenland , and remains of biotic material found in 4.1 billion-year-old rocks in Western Australia. The earliest direct evidence of life on Earth
24566-469: The partial melting of this mafic crust. The presence of grains of the mineral zircon of Hadean age in Eoarchean sedimentary rocks suggests that at least some felsic crust existed as early as 4.4 Ga , only 140 Ma after Earth's formation. There are two main models of how this initial small volume of continental crust evolved to reach its current abundance: (1) a relatively steady growth up to
24739-501: The past 66 Mys , and several million years ago, an African ape species gained the ability to stand upright. This facilitated tool use and encouraged communication that provided the nutrition and stimulation needed for a larger brain, which led to the evolution of humans . The development of agriculture , and then civilization , led to humans having an influence on Earth and the nature and quantity of other life forms that continues to this day. Earth's expected long-term future
24912-478: The planet's environment . Humanity's current impact on Earth's climate and biosphere is unsustainable , threatening the livelihood of humans and many other forms of life, and causing widespread extinctions . The Modern English word Earth developed, via Middle English , from an Old English noun most often spelled eorðe . It has cognates in every Germanic language , and their ancestral root has been reconstructed as * erþō . In its earliest attestation,
25085-421: The polar Northern and Southern hemispheres; or by longitude into the continental Eastern and Western hemispheres. Most of Earth's surface is ocean water: 70.8% or 361 million km (139 million sq mi). This vast pool of salty water is often called the world ocean , and makes Earth with its dynamic hydrosphere a water world or ocean world . Indeed, in Earth's early history
25258-583: The port at Lisbon. From there he went to Vale do Paraíso north of Lisbon to meet King John II of Portugal, who told Columbus that he believed the voyage to be in violation of the 1479 Treaty of Alcáçovas . After spending more than a week in Portugal, Columbus set sail for Spain. Returning to Palos on 15 March 1493, he was given a hero's welcome and soon afterward received by Isabella and Ferdinand in Barcelona. To them he presented kidnapped Taínos and various plants and items he had collected. Columbus's letter on
25431-455: The possibility that the islands of the Antilles discovered earlier by Christopher Columbus might still be the eastern edges of Asia, as Columbus continued to insist until his death in 1506. A 1504 globe , possibly created by Leonardo da Vinci , depicts the New World as only South America , excluding North America and Central America . A conference of navigators known as Junta de Navegantes
25604-490: The present day, which is supported by the radiometric dating of continental crust globally and (2) an initial rapid growth in the volume of continental crust during the Archean , forming the bulk of the continental crust that now exists, which is supported by isotopic evidence from hafnium in zircons and neodymium in sedimentary rocks. The two models and the data that support them can be reconciled by large-scale recycling of
25777-493: The rates of mantle convection and plate tectonics, and allowing the production of uncommon igneous rocks such as komatiites that are rarely formed today. The mean heat loss from Earth is 87 mW m , for a global heat loss of 4.42 × 10 W . A portion of the core's thermal energy is transported toward the crust by mantle plumes , a form of convection consisting of upwellings of higher-temperature rock. These plumes can produce hotspots and flood basalts . More of
25950-528: The resources of newly discovered lands". Despite a popular misconception to the contrary, nearly all educated Westerners of Columbus's time knew that the Earth is spherical , a concept that had been understood since antiquity . The techniques of celestial navigation , which uses the position of the Sun and the stars in the sky, had long been in use by astronomers and were beginning to be implemented by mariners. However Columbus made several errors in calculating
26123-399: The revenues from the new lands in perpetuity. He also would have the option of buying one-eighth interest in any commercial venture in the new lands, and receive one-eighth ( ochavo ) of the profits. In 1500, during his third voyage to the Americas, Columbus was arrested and dismissed from his posts. He and his sons, Diego and Fernando, then conducted a lengthy series of court cases against
26296-499: The same year the monarchs furnished him with a letter ordering all cities and towns under their dominion to provide him food and lodging at no cost. Columbus also dispatched his brother Bartholomew to the court of Henry VII of England to inquire whether the English crown might sponsor his expedition, but he was captured by pirates en route, and only arrived in early 1491. By that time, Columbus had retreated to La Rábida Friary , where
26469-515: The shape of an ellipsoid , bulging at its Equator ; its diameter is 43 kilometres (27 mi) longer there than at its poles . Earth's shape also has local topographic variations; the largest local variations, like the Mariana Trench (10,925 metres or 35,843 feet below local sea level), shortens Earth's average radius by 0.17% and Mount Everest (8,848 metres or 29,029 feet above local sea level) lengthens it by 0.14%. Since Earth's surface
26642-539: The size of the Earth, the distance the continent extended to the east, and therefore the distance to the west to reach his goal. First, as far back as the 3rd century BC, Eratosthenes had correctly computed the circumference of the Earth by using simple geometry and studying the shadows cast by objects at two remote locations. In the 1st century BC, Posidonius confirmed Eratosthenes's results by comparing stellar observations at two separate locations. These measurements were widely known among scholars, but Ptolemy's use of
26815-457: The smaller, old-fashioned units of distance led Columbus to underestimate the size of the Earth by about a third. Second, three cosmographical parameters determined the bounds of Columbus's enterprise: the distance across the ocean between Europe and Asia, which depended on the extent of the oikumene , i.e., the Eurasian land-mass stretching east–west between Spain and China; the circumference of
26988-423: The statement in the apocryphal book 2 Esdras ( 6:42 ) that "six parts [of the globe] are habitable and the seventh is covered with water." He was also aware of Marco Polo's claim that Japan (which he called "Cipangu") was some 2,414 km (1,500 mi) to the east of China ("Cathay"), and closer to the equator than it is. He was influenced by Toscanelli's idea that there were inhabited islands even farther to
27161-427: The summer and winter solstices exchanged and the spring and autumnal equinox dates swapped. Christopher Columbus Christopher Columbus ( / k ə ˈ l ʌ m b ə s / ; between 25 August and 31 October 1451 – 20 May 1506) was an Italian explorer and navigator from the Republic of Genoa who completed four Spanish-based voyages across the Atlantic Ocean sponsored by the Catholic Monarchs , opening
27334-512: The term "un altro mondo" ("another world") to refer to sub-Saharan Africa , which he explored in 1455 and 1456 on behalf of the Portuguese. This was merely a literary flourish, not a suggestion of a new "fourth" part of the world. Cadamosto was aware that sub-Saharan Africa was part of the African continent. Peter Martyr d'Anghiera , an Italian chronicler at the service of Spain , doubted Christopher Columbus 's claims to have reached East Asia ("
27507-539: The time accepted Ptolemy's estimate that Eurasia spanned 180° longitude, rather than the actual 130° (to the Chinese mainland) or 150° (to Japan at the latitude of Spain). Columbus believed an even higher estimate, leaving a smaller percentage for water. In d'Ailly's Imago Mundi , Columbus read Marinus of Tyre 's estimate that the longitudinal span of Eurasia was 225° at the latitude of Rhodes . Some historians, such as Samuel Eliot Morison , have suggested that he followed
27680-549: The traditional wine-growing regions of Europe, North Africa and the Near East . The usefulness of these terms for wines though have been questioned as arbitrary and too generalized. In a biological context, species can be divided into those in the Old World ( Palearctic , Afrotropic ) and those in the New World ( Nearctic , Neotropic ). Biological taxonomists often attach the "New World" label to groups of species found exclusively in
27853-465: The watering stop at Bezeguiche in present-day Dakar , Senegal , as Vespucci was on his expedition to chart the coast of newly discovered Brazil and the ships of the Second Portuguese India armada , commanded by Pedro Álvares Cabral , were returning from India . Having already visited the Americas in prior years, Vespucci likely found it difficult to reconcile what he had already seen in
28026-616: The way for the widespread European exploration and colonization of the Americas . His expeditions were the first known European contact with the Caribbean and Central and South America. The name Christopher Columbus is the anglicization of the Latin Christophorus Columbus . Growing up on the coast of Liguria , he went to sea at a young age and traveled widely, as far north as the British Isles and as far south as what
28199-483: The west were not the edges of Asia, as asserted by Christopher Columbus , but rather an entirely different continent that represented a "New World". According to Mundus Novus , Vespucci realized that he was in a "New World" on 17 August 1501 as he arrived in Brazil and compared the nature and people of the place with what Portuguese sailors told him about Asia . A chance meeting between two different expeditions occurred at
28372-456: The word eorðe was used to translate the many senses of Latin terra and Greek γῆ gē : the ground, its soil , dry land, the human world, the surface of the world (including the sea), and the globe itself. As with Roman Terra /Tellūs and Greek Gaia , Earth may have been a personified goddess in Germanic paganism : late Norse mythology included Jörð ("Earth"), a giantess often given as
28545-598: The year. This causes the seasonal change in climate, with summer in the Northern Hemisphere occurring when the Tropic of Cancer is facing the Sun, and in the Southern Hemisphere when the Tropic of Capricorn faces the Sun. In each instance, winter occurs simultaneously in the opposite hemisphere. During the summer, the day lasts longer, and the Sun climbs higher in the sky. In winter, the climate becomes cooler and
28718-598: Was a carrack , the Santa María , owned and captained by Juan de la Cosa , and under Columbus's direct command. The other two were smaller caravels , the Pinta and the Niña , piloted by the Pinzón brothers . Columbus first sailed to the Canary Islands. There he restocked provisions and made repairs then departed from San Sebastián de La Gomera on 6 September, for what turned out to be
28891-528: Was an island in the Bahamas , known by its native inhabitants as Guanahani . He then visited the islands now known as Cuba and Hispaniola , establishing a colony in what is now Haiti . Columbus returned to Castile in early 1493, with captured natives. Word of his voyage soon spread throughout Europe. Columbus made three further voyages to the Americas, exploring the Lesser Antilles in 1493, Trinidad and
29064-406: Was assembled by the Spanish monarchs at Toro in 1505 and continued at Burgos in 1508 to digest all existing information about the Indies, come to an agreement on what had been discovered, and set out the future goals of Spanish exploration. Amerigo Vespucci attended both conferences, and seems to have had an outsized influence on them—at Burgos, he ended up being appointed the first piloto mayor ,
29237-479: Was mapped. The discovery of the Bering Straits in the early 18th century, established that Asia and North America were not connected by land. But some European maps of the 16th century, including the 1533 Johannes Schöner globe , still continued to depict North America as connected by a land bridge to Asia. In 1524, the term "New World" was used by Giovanni da Verrazzano in a record of his voyage that year along
29410-642: Was not a scholarly man. Yet he studied these books, made hundreds of marginal notations in them and came out with ideas about the world that were characteristically simple and strong and sometimes wrong ... Under the Mongol Empire 's hegemony over Asia and the Pax Mongolica , Europeans had long enjoyed a safe land passage on the Silk Road to India , parts of East Asia , including China and Maritime Southeast Asia , which were sources of valuable goods. With
29583-796: Was not from Genoa, but from the Aragon region of Spain or from Portugal. These competing hypotheses have been discounted by most scholars. In 1473, Columbus began his apprenticeship as business agent for the wealthy Spinola , Centurione, and Di Negro families of Genoa. Later, he made a trip to the Greek island Chios in the Aegean Sea , then ruled by Genoa. In May 1476, he took part in an armed convoy sent by Genoa to carry valuable cargo to northern Europe. He probably visited Bristol , England, and Galway , Ireland, where he may have visited St. Nicholas' Collegiate Church . It has been speculated he went to Iceland in 1477, though many scholars doubt this. It
29756-489: Was rich in gold. Columbus, for his part, continued to the northern coast of Hispaniola , where he landed on 6 December. There, the Santa María ran aground on 25 December 1492 and had to be abandoned. The wreck was used as a target for cannon fire to impress the native peoples. Columbus was received by the native cacique Guacanagari , who gave him permission to leave some of his men behind. Columbus left 39 men, including
29929-459: Was still imperfect at the time of his first voyage. By sailing due west from the Canary Islands during hurricane season , skirting the so-called horse latitudes of the mid-Atlantic, he risked being becalmed and running into a tropical cyclone , both of which he avoided by chance. By about 1484, Columbus proposed his planned voyage to King John II of Portugal . The king submitted Columbus's proposal to his advisors, who rejected it, correctly, on
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