Aging stars may be destroying the giant planets orbiting closest to them, according to a new study by astronomers at UCL and ...

Scientists found two Earth-sized planets and a third candidate orbiting a nearby double star system, TOI-2267.

Researchers have discovered more than 6,000 exoplanets in our Milky Way. Of these, the sub-Neptune class, which are smaller ...

As telescopes have become more powerful, it’s turned out our solar system is not the only game in town: There are millions of ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of ...

Skywatchers who spotted the Jupiter-Venus conjunction on Aug. 12 are in for a dazzling display in the night sky through the end of August, with a "planet parade" building in the eastern sky, with ...

The first sign of possible extraterrestrials detected in the cosmos didn't come in the form of little green aliens flying around in saucer-shaped spacecraft. In fact, the life that could be – emphasis ...

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.