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.

Mercury reaches its greatest elongation, 26 degrees east of the sun on July 4. From latitude 40 degrees north, the ...

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

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

Mercury is an odd little planet. The closest world to the Sun has some extreme surface structures, steep hills and cliffs, ...

As the closest planet to the Sun, Mercury is exposed to the star's enormous gravitational field. And it's really stressful.