Mercury is the innermost and smallest of the eight major planets in our Solar System, orbiting closest to the Sun. Though ...

Mercury, the closest planet to the sun, is only slightly larger than Earth's moon and is pockmarked with craters. The planet is visible to the unaided eye and as such as has long been known to humans.

Although NASA’s Project Mercury and SpaceShipOne served very different objectives, a closer look reveals that both missions ...

October 1, 1958 - The official start of NASA. October 7, 1958 - NASA announces Project Mercury. The Mercury project’s objectives are to place a human spacecraft into orbital flight around Earth, ...

Mercury in color, from data collected by NASA's MESSENGER spacecraft. Scientists studying Mercury have discovered evidence for the existence of glaciers in the planet’s polar regions and suggested ...

Mercury is the closest planet to the sun, and you would be forgiven for thinking it’s just a boring lump of rock. After all, there’s nothing interesting on it like aliens or places to drink. Still, ...