Add Yahoo as a preferred source to see more of our stories on Google. It's unlikely you'll be able to walk outside and see a line of planets, but according to NASA, a seven-planet parade happening ...

CAPE CANAVERAL, Fla. (AP) – The only spacecraft ever to orbit Mercury ended its four-year tour with a crash landing Thursday. NASA’s Messenger plunged from orbit as planned and slammed into the sun’s ...

NASA's hardest working probe has finally run out of fuel, and will meet a tragic fate as it crashes into the planet Mercury on April 30. See the amazing photos this probe shared with us in its very ...

The original story “ Mercury has a 10-mile-thick layer of diamonds under its surface ” is published in The Brighter Side of ...

On Feb. 28, a stellar alignment of planets will illuminate the night sky for the last time in a decade Space Frontiers/Hulton Archive/Getty Calling all stargazers and astronomy enthusiasts — something ...

A nearby “super-Earth” is giving scientists a rare look at the bare surface of a distant world, and it’s far from Earth-like.