NASA developed space shuttles to make more routine trips back and forth between the earth’s surface and Low Earth Orbit. NASA built six space shuttles, the first one launching in 1981 and the last one ...

With SpaceX now launching its reusable Falcon 9 rocket up to several times a week, the U.S. company has quickly become a giant of global spaceflight. It's a far cry from the days of America's Space ...