Spacex Dragon is on its way to the International Space Station.
This is the second time SpaceX has successfully landed one of its rocket stages. In December, 2015, Spacex landed Falcon 9 rocket at a ground-based landing site in Cape Canaveral
Elon Musk, SpaceX’s CEO, said drone ship landings are “needed for high-velocity missions.” Musk added that altitude and distance don’t mean much for orbit—speed does.
“Ship landings are not needed for flexibility or to save fuel costs,” Musk explained. “Just not physically possible to return to return to launch site.”
Screen cap from the stern cam of droneship "Of Course I Still Love You" pic.twitter.com/4rGOJMTzVn— Elon Musk (@elonmusk) April 8, 2016
1st stage has landed on Of Course I Still Love You https://t.co/tdni53IviI— SpaceX (@SpaceX) April 8, 2016
Falcon 9 first stage on our droneship in the Atlantic after propelling the Dragon spacecraft to the @Space_Station pic.twitter.com/Cnnej7zEnt— SpaceX (@SpaceX) April 8, 2016