Pluto was believed to be the only body beyond Neptune with an atmosphere. Now, a new discovery in our solar system is ...

A rocky planet nearly 50 light-years away appears to be airless, dark, and covered in volcanic or weathered rock, according ...

The potential planets were detected using data from NASA's Transiting Exoplanet Survey Satellite.

For the first time in years, astronomers are seriously talking about adding a new member to the solar system’s planetary family. I’m not talking about reviving Pluto’s status, but about a potential ...

A new solar telescope at Paranal studies the Sun to reduce stellar noise, helping scientists better detect and study ...

Rogue planets sound like rare travelers among the stars, freed from the gravitational constraints of a host system, left to ...

Astronomers discover water-ice clouds on a cold exo-Jupiter planet, Epsilon Indi Ab, advancing the search for Earth-like ...