For folks in the United States, July evenings mean 4th of July fireworks. While you're waiting for the show, be sure to watch ...

Mercury moves super fast around the Sun, finishing its year in just 88 Earth days. The planet has crazy temperature swings, ...

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

Reaching Mercury is such a challenge because “the gravitational pull of the Sun is very strong near Mercury, which makes it difficult for spacecraft to slow down enough to enter orbit around the ...

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

Four prominent celestial objects — the moon, a bright planet and two bright stars — will come together to form a "celestial ...

It will go into orbit around Mercury in 2026, about a year after its original arrival time. The delay was prompted by efforts to overcome problems with the spacecraft’s thrusters.