Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

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 ...

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 tonight could be visible in some form in parts of the U.S. The upcoming ...

A European-Japanese space mission will reach Mercury in 2026, carrying instruments designed to answer a question that has ...

Close-up images from NASA’s MESSENGER spacecraft revealed that Mercury’s surface records impacts of almost unimaginable scale ...

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 ...

NASA's Mercury-orbiting spacecraft, Messenger, is going out with a bang this week, adding a hefty crater to the little planet closest to the sun. The first spacecraft to circle Mercury, Messenger is ...

Stargazers are in for a treat this week as a planetary parade is set to take place - just a month after the last planetary spectacle. This latest planetary alignment or "planet parade" - is set to ...

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 ...

Alongside a crescent moon, Mercury, Venus and Saturn will become visible to stargazers just before dawn on Friday morning. According to NASA, the planetary phenomenon will be clearest about 45 minutes ...