This is the first complete topographic map of Mercury. It reveals the lowest and highest points on the planet as well as unprecedented detail Mercury's north pole. Lear more on NASA.gov.

It's not especially remarkable for a few planets to line up in the sky, but the sight of four or five brilliant planets at ...

Mercury, the planet closest to the sun, has a 10-mile-thick mantle of pure diamond, according to NASA. The report, derived ...

Using data from NASA's MESSENGER spacecraft, scientists have determined that a 10-mile-thick diamond mantle may lie beneath ...

Mercury ' s inner core is solid and about the same size as Earth ' s inner core, a new study using observations from NASA's MESSENGER mission has indicated. Mercury is the smallest planet in our ...

Produced by Matt Stuart. Video courtesy of NASA. Follow TI: On Facebook More from Tech Mercury only comes between Earth and the Sun about 13 times every century. The last time this happened was in ...