On July 20, 1969, astronaut Neil Armstrong stepped down from Apollo 11's lunar module onto the surface of the moon, the first human in history to do so. By touching down on the lunar surface, ...

The photograph taken by Lunar Orbiter 1 Aug. 23, 1966, of a crescent Earth above the lunar horizon, along with the digitized and enhanced version released Nov. 13, 2008, by the Lunar Orbiter Image ...

In the 64 years since Yuri Gagarin became the first human in space, fewer than 700 people have followed him. But space flight becomes more affordable and accessible every year, and that number is set ...