In an exciting breakthrough for astronomy and the search for extraterrestrial life, a team of international scientists has announced the discovery of Gliese 12 b, a temperate, Earth-sized exoplanet ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Most scientists agree that a major collision 4.5 billion years ago with a protoplanet named Theia formed ...

As far as extrasolar planets go, ‘GJ 367 b’ is a featherweight. With half the mass of Earth, the newly discovered planet is one of the lightest among the nearly 5000 exoplanets known today. It takes ...