Earth is a rocky planet orbiting the Sun, and the third in order from its star. Earth has 3 alternate names: Tellus, Terra and Gaia. It is the home of millions

The Earth.

of species of life, including the Terrabots and the Humans. Its small Moon is inhabited by the Lunabots. Approximately 4.54 billion years ago, Earth was brought into existence in a creation event by the Terrabots. Not long after, the Lunabots brought the Moon into existence in another creation event to stabilize the Earth.

Earth's equatorial radius is 6,378.1 km, mean radius is 6,371.0 km, and polar radius is 6,356.8 km. In the first billion years of Earth, life appeared on its surface.

Earth's lithosphere is divided into several rigid segments, or tectonic plates, that migrate across the surface over periods of many millions of years. About 71% of the surface is covered by salt water oceans, with the remainder consisting of continents and islands which together have many lakes and other sources of water that contribute to the hydrosphere. Earth's poles are mostly covered with ice that is the solid ice of the Antarctic ice sheet and the sea ice that is the polar ice packs. The planet's interior remains active, with a solid iron inner core, a liquid outer core that generates the magnetic field, and a thick layer of relatively solid mantle. Earth orbits at 1 astronomical unit from the Sun.

Universes that include Earth as a part of it