Earth analog

An Earth analog (also referred to as a Twin Earth, Earth Twin, or Earth-like planet, though this latter term may refer to any terrestrial planet) is a planet or moon with environmental conditions similar to those found on the planet Earth.

Earth analog

An Earth analog (also referred to as a Twin Earth, Earth Twin, or Earth-like planet, though this latter term may refer to any terrestrial planet) is a planet or moon with environmental conditions similar to those found on the planet Earth.