NASA didn't always have white spacesuits. Their very first manned spaceflight, Project Mercury, featured silver suits, but none of those astronauts actually explored the vacuum of space.

As part of Project Mercury, NASA prepared to send a chimpanzee, Ham, into space to test the effects of space on a living creature. Explore Subscribe Newsletters Content Licensing Our Partners ...

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

Europe's BepiColombo mission will enter orbit of the solar system's first planet in about two years, but it's been whizzing past Mercury regularly ... following NASA's Messenger mission in 2011.

Clear Lake, California’s largest freshwater lake, which is next to an abandoned mercury mine, turned a sickly shade of ...

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 ...

On Jan. 9, 1959, NASA selected the McDonnell Aircraft Corporation to develop the Mercury spacecraft, which would later carry the first American astronauts into space, Alan Shepard and Virgil “Gus” ...

a 20th-century Italian mathematician who contributed to NASA's Mariner 10 mission to Mercury in the 1970s and, two decades later, to the Italian Space Agency's tethered satellite project that flew ...

Miss Sam, a rhesus monkey, successfully flew onboard a Mercury test capsule to prove the effectiveness of the launch escape ...

NASA has relied on private contractors to build spacecraft for every major human spaceflight program, starting with Project Mercury and continuing until the present. With these and other ...