Most people learned in school that Mercury is just a small, scorched planet close to the Sun. But NASA’s MESSENGER mission ...

After building us up and letting us down easy about that alleged discovery "for the history books" from Curiosity, NASA has announced the next best thing in space right now: we found water ice on ...

Sky This Week is brought to you in part by Celestron. Friday, November 21 The solar system's seventh planet, the ice giant Uranus, reaches opposition this morning at 7 A.M. EST among the stars of ...

The warmest parts of Mars host a strange, thick layer of ice beneath the surface, and we may have finally figured out how it got there. It might have been shifted from the inside of the planet by ...

When astronomers search for planets that could host liquid water on their surface, they start by looking at a star's ...