From satellites to the moon, NASA has conducted dozens of successful missions to space. These are some of the most famous. We'll start with a look at NASA's first space station.
Virgin Galactic is trying to give the average person a chance at playing astronaut for a day -- on SpaceShipTwo, the world's first civilian passenger spaceliner.
Have you met the driving force behind the U.S. space program for the foreseeable future? Take a second to get acquainted with the proposed blasting behemoth.