There and back: Elon Musk's SpaceX makes history with epic rocket launch and landing

SpaceX did it.  For the first time in its history, the Elon Musk-founded spaceflight company has relaunched a previously flown Falcon 9 booster.  Oh, and they landed it back on Earth again.SEE ALSO: Elon Musk's SpaceX is betting big on its rocket launch this weekThis rocket, which flew a payload to orbit in April 2016 for its first flight, launched at 6:27 p.m. ET, coming back in for its second landing on a drone ship in the ocean about 8.5 minutes later. This was the ninth successful