SpaceX's Falcon 9 rocket lands upright for the first time in the Atlantic Ocean on the "Of Course I Still Love You" droneship in April 2016.
Landing boosters after flight is a feat that SpaceX has mastered with its smaller workhorse rocket, the Falcon 9.
SpaceX says that has driven down its costs, allowing the company to underprice the rest of the rocket market.
Just before touchdown, the Falcon 9 fires up its engines again — essentially using that power as a braking system.
With 33 engines at its base, each more powerful than one of the nine used on the Falcon, the Super Heavy booster packs roughly 10 times the amount of thrust at liftoff.
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