Mercury reaches its point of greatest eastern elongation on Friday (July 4), presenting an excellent opportunity to spot the ...

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 is a mystery. It’s the smallest planet in our solar system, the closest to the Sun, and one of the most extreme. Its ...

The planet Mercury may be hot, but it appears to be cooling down. That's the conclusion of a new study that looked for the kinds of features on Mercury that can form as the surfaces of planets ...

Mercury’s impact craters, also known as peak ring basins, were created as a result of asteroids or comets smashing into the tiny planet. Many of them, however, were flooded by volcanic lava ...

NASA's MESSENGER spacecraft launched 20 years ago, on August 2, 2004, and although its mission ended in 2015, MESSENGER's observations of the Sun-scorched planet are still yielding new discoveries ...

It seems like it should be pretty easy to get to Mercury.The little rocky planet is so much closer to Earth than distant destinations like Jupiter, where we’ve successfully sent multiple ...