The following is an excerpt from Alyssa Newcomb and Erin Dooley | December 21, 2015 | abcnews.go.com |
SpaceX successfully launched and landed its Falcon 9 rocket back on Earth tonight, marking the first time a rocket has launched a payload into space and returned.
Founder Elon Musk has said the ability to reuse a rocket -- which dramatically reduces launch cost -- is something that will help revolutionize commercial space travel.
"I think this is a critical step along the way towards being able to establish a city on Mars," he said on a call with reporters Monday night. "That’s what all this is about."
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