The planet Earth is a vibrant terran world in the Sol system with a diverse biosphere recovering from a near-miss ecological collapse. Being the only tectonically active planet in the Sol system and one of two worlds in the system with liquid surface water, Earth is the archetype of the terran planetary class. Earth is home to an indigenous sophont species: humans. It is roughly the center of known space and the United Nations Aerospace Coalition's seat of power, making it cartographically critical to the interstellar colonial network.


Earth is the third planet out from its sun, Sol. It has a single natural satellite: a selenic spherical planetoid called Luna.


by NASA (Earth Observatory)

Click this image to view an interactive 3D map of Earth.
The planet Earth has six major continents: Africa, Eurasia, Australia, North and South America, and Antarctica. These sit in a global ocean, which has been split into several oceans in traditional naming conventions: the Atlantic, Pacific, Indian, Arctic, and Southern Oceans.
For more information, visit the Wikipedia page on Earth.

Fauna & Flora

Earth is home to the terragenid group of organisms, a highly successful and widespread type of life that includes humans.


by NASA (Earth Observatory)

Alternative Name(s)
Location under
Included Locations
Included Organizations
Owning Organization
United Nations of Humanity
Location 9.4e+7 km from Sol
System Sol

Orbital Characteristics

Semi-major axis 1 AU
Semi-minor axis 1 AU
Orbital period 365.26 days
Rotation period 24 hours
Notable satellites
  • Luna (natural)
  • United Nations Orbital Command Station

Planetary Characteristics

Class medium temperate terra (TR)
Radius 6371 km
Surface area 5.1e+8 km2
Volume 1.08e+12 km3
Mass 5.97e+24 kg
Gravity 9.8 m/s2
Atmospheric pressure 1 atm
Atmosphere composition
  • 78% nitrogen
  • 21% oxygen
  • 0.9% argon
  • 0.1% other gases
Average temperature 14.9°C

Biosphere Information

Life Organic multicellular (marine, terrestrial)
Native sophonts humans
Tech level 15
Population 8 billion

Articles under Earth


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