Trekipedia

Earth

Class-M. Earth is the third planet in the Sol System^[1] in Sector 001^[7] and homeworld of Humans. In 2254, the Talosians viewed an image of the Sol System and many images of Earth’s history while accessing the U.S.S. Enterprise NCC-1701‘s computer.^[1] Earth became one of the founding members of the United Federation of Planets in 2161,^[15] following the Romulan War,^[6] and served as that body’s capital.^[5] Starfleet Command and Starfleet Academy were based in San Francisco,^{[2, 3]} while the offices of the Federation President^[9] and the Federation Council chamber were located in Paris.^[22] The planet hosted several advanced orbital habitats,^[2] Starfleet spacedocks,^[4] and satellite networks, including Federation communications networks.^[12]

Earth enjoyed one of the most advanced, peaceful, and materially pleasant cultures of any known species. There was no case of terrorist bombing or a State of Emergency, other than the Borg attack of 2366, reported in over a century prior to the Antwerp Conference incident and the Changeling scare of 2372.^[12] Its worldwide power-relay system was run by the Division of Planetary Operations to operate sensors, transporters and surface-based defense installations. Starfleet had its own emergency back-up system.^[13]

Though many native tribes resisted acculturation and sought out the founding of an off-world colony like Dorvan V^[10] or Trebus^[15] in order to maintain their traditional ways, this was not universally true.^[11]

Earth’s location was once pointed out by the Doctor to Danara Pel when the two went “parking” on a holographic re-creation Mars.^[14] The planet had a diameter of 12,756 kilometers; it lay approximately 149,680,000 kilometers (or 1 Astronomical Unit) from its parent star, Sol, and surface temperatures ranged from -56.7°C to 34°C. The planet’s day was a single rotation of 24 hours, and it took 365.24 days to complete one orbit around its star. Gravity was 1.0g, and the planet had a single, Class-D moon, Luna.^[16] Orbital facilities included Earth Spacedock,^[4] Earth Station McKinley,^[8] and the San Francisco Fleet Yards.^[1]

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E60 Timeline

In the E60 timeline, Earth was destroyed by the Xindi.^[17]

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E76 Timeline

In the E76 timeline, Lenin was assasinated by time-travelers, preventing the rise of the Union of Soviet Socialist Republics in the wake of the Bolshevik Revolution, and by 1944 Nazi Germany—with assistance from other time travelers—had conquered much of the planet.^{[18, 19, 20]}

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ST11 Timeline

The Earth of the ST11 timeline is very similar, though not quite identical, to its counterpart in the Prime reality.^[23]