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Earth

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"Earth, man... What a shithole."
Johner (from Alien Resurrection)
Nasa - earth from apollo
Earth
System

Solar System

Suns

Sol

Moons

Luna

Class

Terrestrial

Diameter

12,756 km

Terrain

Forests, grasslands, deserts, jungles, wetlands, mountains, tundra, polar regions, oceans, lakes and rivers

Atmosphere

78% nitrogen, 21% oxygen, 0.9% argon, 0.1% others (carbon dioxide, water, etc.)

Climate

Many climate zones

Species

Engineers (formerly)
Humans
Yautja (formerly)
Xenomorphs (formerly)

  [Source]

Earth is the homeworld of the human race and the third planet in the Solar System.

Geographical featuresEdit

As the homeworld of the Human species, Earth is the archetype by which they measure all other planets in terms of habitability. The ultimate goal of all terraforming efforts across the galaxy is to create an environment similar to that of Earth on any planet the humans attempt to colonize.

Earth is approximately 4.5 billion years old. It possesses an iron core that is solid at its center with a liquid layer encompassing it. This genereates a powerful magnetosphere that has kept Earth from losing its water and other volatile organic compounds. The core is surrounded by semifluid magma, on which the solid, yet light crust floats. The planet is geologically active, with plate tectonics causing volcanoes and natural springs to dot its surface. Earthquakes are common.

The planet lies in the liquid water zone of Sol, and water is found in abundance-oceans cover 70% of the planet. The 30% of the surface that is dry land is divided amongst four major landmasses (which Humans divide into seven continents) and thousands of islands spread across the oceans. There is a thin atmosphere that is maintained by the biomass on the planet's surface. It is 78% nitrogen and 21% oxygen, with the remainder a mix of trace gases including argon, carbon dioxide, and water vapor.

Earth spins on its axis once every 23 hours, 56 minutes, 4 seconds. The axis is tilted 23° from its orbital plane, which causes seasonal changes in its higher latitudes as it orbits Sol.

Earth held an abundance of natural resources well into the 22nd century, such as minerals and several substances produced as by-products by the planet's biomass, such as petroleum, coal, wood, and natural gas. Humans utilized these resources into an impressive technology base. However, over time the resources of Earth began to become exhausted, prompting Humans to search for other worlds which could be exploited.

Terrain and ClimateEdit

The geological activity of Earth has created a wide variety of terrain across its surface. Plate tectonics and erosion (by both the atmosphere and water) dominate the formation processes of surface features. There are mountain ranges, valleys, plains, mesas, and canyons, which in turn may be found in deserts, tundra, forests, grasslands, and icecaps at the poles. Earth may be classified into three general climate zones: the tropics, which straddle each side of the Equator, the polar regions located around the North and South Poles, and the temperate zones in-between. Each of these are divided into other zones which vary depending on the distance from the Equator, proximity to large bodies of water, and local geography, such as mountains.

Humans began to modify the terrain of Earth when they discovered agriculture around 8000 BCE. This enabled the development of great cities linked by trade routes stretching for thousands of miles over both land and ocean. Beginning in the 19th century, Humans began to alter the planetary climate with the introduction of industrial by-products. By the 24th century, much of Earth had become an arid wasteland. But over time, by the time of Alien Resurrection, It seems that there have been efforts to restore the Earth's ecology in some areas.

SpeciesEdit

SentientEdit

Semi-Sentient Edit

  • Cats
  • Dogs
  • Ox
  • Pig
  • Cetacea (Dolphins/Whales)
  • Corvidae (Crow family of birds)
  • Elephants
  • Non-Human hominids (ex: Chimpanzees)

LocationsEdit

Notable locations that have been the site of a Xenomorph or Predator activity:

AntarcticaEdit

North AmericaEdit

Central and South AmericaEdit

EuropeEdit

AfricaEdit

  • East Africa (Predator 2009 Comic)

AsiaEdit

AustraliaEdit

  • Sydney, Australia (Aliens: Sentinels)

TriviaEdit

  • Gateway Station is in permanent orbit around Earth.
  • In the unofficial Alien sequel, Alien 2: On Earth, the Aliens take over the Earth, as suggested by the film's "you may be next!" message. The conquest of Earth by the Xenomorphs is also a major plot point in many of the comics and novels of the Alien franchise.
  • It is heavily insinuated in Alien Resurrection that some kind of catastrophe, or simply years of degradation, have made Earth uninhabitable or at least very unpleasant. At the end of the extended Special Edition of the movie, it is shown that Paris, France is in ruins, while the surrounding area is a desolate wasteland. The devastation may have something to do with the "Lacerta Plague", which is mentioned in the film by Annalee Call. However, Earth does not appear to have been entirely abandoned — the planet remains the designated home base of the USM Auriga. Johner's comment that Earth is "a shithole" by this time seems to imply that centuries of pollution, war and resource depletion have left Earth in a dilapidated state.
  • In the SNES game Aliens vs. Predator, the colonists of Vega 4 send a distress call to "Earth-based authorities", implying Earth is once more the center of human activity by the year 2493. 
  • In Alien Resurrection, when the Aurgia hits Earth, a large blast wave can be seen. The wave would have killed almost all life in central Africa.

AppearancesEdit

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