From a Cape Canaveral blockhouse the seven Mercury astronauts watched tensely last week as the countdown neared zero. Atop a towering Redstone rocket rested the one-ton Mercury space capsule of ...

CAPE CANAVERAL, Fla. (AP) – The only spacecraft ever to orbit Mercury ended its four-year tour with a crash landing Thursday. NASA’s Messenger plunged from orbit as planned and slammed into the sun’s ...

Part 2 explores the dramatically different approaches to the launch systems, and the surprising similarities in the factors ...

NASA’s Mercury-bound Messenger spacecraft dropped into orbit around the tiny, orbitally eccentric planet just a few months ago, and it’s already sent back enough data to notably alter our take on the ...

NASA and the USGS created a topographic map of the closest planet to the sun. It's a view of Mercury that no one has ever seen before. They did it by using more than 100,000 pictures taken from NASA's ...

NASA's Mercury-orbiting spacecraft, Messenger, is going out with a bang this week, adding a hefty crater to the little planet closest to the sun. The first spacecraft to circle Mercury, Messenger is ...

Our planet Earth and Mercury have invisible tails stretching millions of kilometres. These cosmic tails are real phenomena.

NASA is asking for the public's help, but there's a catch. Mercury's surface is seen in exaggerated color in this image provided by NASA. NASA/JHU APL/CIW — -- NASA is asking for the public's ...

Comets are not the only celestial bodies with tails. Earth and Mercury also possess them, formed by different mechanisms.

One of the first and extremely rare full-color photographs taken by John Glenn, the first American to orbit Earth and the first human to capture still photographs from space. Overwhelmed by the ...

Although NASA’s Project Mercury and SpaceShipOne served very different objectives, a closer look reveals that both missions were powered by equal parts of competition, innovation, and a strong dose of ...