They’re not a perfect match, but it’s way too hot on the first planet for us to hop over and confirm for ourselves.

Pieces of Mercury may have been found on Earth, potentially allowing scientists to study the Solar System's innermost planet.

Most meteorites that have reached Earth come from the asteroid belt between Mars and Jupiter. But we have 1,000 or so ...

Say hello to Mercury, that pesky rock that always seems to be in retrograde ruining your life. A spacecraft operated by the European Space Agency and Japan made its final fly-by over the planet ...

Mercury doesn't give up its secrets easily. The smallest planet in our solar system is also one of the most extreme—a ...

The nights surrounding June 7 will see Jupiter and Mercury crowd together close to the horizon in the northwestern sky.

The European Space Agency's BepiColombo spacecraft recently made a close flyby of Mercury, and it snapped some stunning pictures along the way.

As soon as the U.S. decided to go ahead with Project Mercury, the first missile-borne man-in-space capsule (TIME, Jan. 26), the Pentagon's IBM machines began sorting through Air Force and Navy ...