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

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 ...

Because Mercury rules the mind and communication, Mercury retrograde can be a time for mental reflection. Planets experiencing retrogrades in 2023 This year, every planet in our solar system will ...