Watch astronauts reach space on Apollo 11’s 50th anniversary

Earth is about to mark Apollo 11's 50th anniversary in one of the most fitting ways possible: sending people to space on the same day. NASA's Andrew Morgan (shown at left), Roscosmos' Alexander Skvortsov and the ESA's Luca Parmitano are launching on...

The robots that will sweep Earth’s skies

After six years in space, China's first orbital station, the Tiangong-1 (aka the "Heavenly Palace") has finally outlived its operational limits and begun its descent back to Earth. It's expected to re-enter the atmosphere in a few months, whereupon a...