Gaia

Gaia

In Greek mythology, Gaia, also spelled Gaea, is the personification of Earth. She is the mother of Uranus (Sky), with whom she conceived the Titans, the Cyclopes, and the Giants, as well as of Pontus (Sea), from whose union she bore the primordial sea gods. Her equivalent in the Roman pantheon was Terra.

Gaia (spacecraft)

Gaia is a retired space observatory of the European Space Agency (ESA) that was launched in 2013 and operated until March 2025. The spacecraft was designed for astrometry: measuring the positions, distances and motions of stars with unprecedented precision, and the positions of exoplanets by measuring attributes about the stars they orbit such as their apparent magnitude and colour. As of 2026, the mission data processing continues, aiming to construct the largest and most precise 3D space catalogue ever made, totalling approximately 1 billion astronomical objects, mainly stars, but also planets, comets, asteroids and quasars, among others.

Gaia

Proper noun

1. The ecosystem of the Earth regarded as a self-regulating superorganism. .mw-parser-output .defdate{font-size:smaller}
2. A Greek goddess, the personification of the earth, and one of the primordial deities from whom all the others descend.