Searching for life on other planets requires more than just measuring their distances from their stars. A future NASA ...

An international team has made a significant breakthrough in understanding the tectonic evolution of terrestrial planets.

During the 1240s, Richard Fishacre, a Dominican friar at Oxford University, used his knowledge of light and color to show ...

Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this ...

During the weekend, the orbits of Earth and Saturn will combine to create an interplanetary optical illusion for anyone with ...

An enigmatic group of fossil organisms has finally been identified—and is changing the story of how plants took root on land ...

Scientists traced the Moon's parent planet Theia to the inner Solar System, solving a 4.5-billion-year mystery.

From woolly mammoths to giant sloths, via some lesser-known ice-age beasts like 'killer koalas', the visuals in this ...

About 4.5 billion years ago, a colossal impact between the young Earth and a mysterious planetary body called Theia changed everything—reshaping Earth, forming the Moon, and scattering clues across ...

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...

Robert Irwin is from Queensland, Australia. He also holds American citizenship — his mother Terri Irwin is a native of Oregon ...