Mercury is the closest planet to Earth — yet for decades, scientists struggled to reach it. Extreme heat, intense radiation, ...

Mercury has long been considered a quiet, heavily cratered world, shaped mainly by time and exposure. That assumption began to change when NASA’s MESSENGER spacecraft sent back detailed images of the ...

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 ...

The Solar System is a weird place filled with incredible physics and geological oddities that often break down in human terms ...

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 ...

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 ...

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The First Church of Christ, Scientist, and we’ve always been transparent about that. The church publishes the ...

Stargazers will soon have an opportunity to view six planets in alignment in the night sky, according to NASA. Mercury, Venus, Neptune, Saturn, Uranus and Jupiter will take part in a rare planetary ...

The six-planet parade will feature Mercury, Venus, Neptune, Saturn, Uranus and Jupiter. Mercury, Venus, Saturn and Jupiter will be visible, weather permitting, to the naked eye, while you'll need ...