It shouldn’t be very easy to find ice on Mercury. It’s true that temperatures on the planet’s night side drop to -280°F (-173°C), but daytime temperatures soar to a hellish 800°F (427°C ...

Mercury, the closest planet to the Sun, is a world of extremes and unanswered questions. Though it resembles the Moon with its cratered surface, Mercury is far from ordinary. It’s the smallest planet ...

NASA scientists have discovered that Mercury, the closest planet to the sun, is home to a whole lot of ice. This, of course, is the same planet that gets ridiculously hot around its equator, to ...

Earth’s Moon and Mercury, the closest planet to the Sun, may contain significantly more water ice than previously thought, according to a new analysis of data from NASA’s LRO and MESSENGER ...

There's enough polar ice at Mercury, in fact, to bury an area the size of Washington, D.C., by two to 2 1/2 miles deep, said Lawrence, the lead author of one of the papers.

MESSENGER settled into Mercury's orbit in 2011. During its four years in orbit around Mercury, MESSENGER revealed some surprising things about our Solar System's innermost planet.