SpaceSpaceX to make history launching NASA astronauts on a private rocket On 27 May, NASA astronauts will launch to the International Space Station aboard a SpaceX Crew Dragon, the first time a private company has flown humans into orbit 51¶¯Âþ
VideoWhat is dark energy, and could it destroy the universe? If dark energy has its way, the universe may rip itself apart. Astrophysicist Kathy Romer gives the low-down on this enigmatic stuff. Video