Mercury is a mysterious world. As the closest planet to the sun, it’s a hard-to-reach destination for space missions. So far, only two have made it to Mercury—NASA’s Mariner 10 and MESSENGER ...

The BepiColombo probe's flybys of Mercury have revealed just how sharply and rapidly the planet's local environment changes in response to the solar wind.

Mercury is farthest from the sun in Earth's morning sky on Aug. 19. Mercury will be farthest from the sun on Tuesday (Aug. 19 ...

The BepiColombo mission won't be in Mercury's orbit for several years, but it was able to take some measurements during last year's flyby.