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SpaceX Rocket Lands on Ocean Drone Ship in Historic First

SpaceX Lands Rocket on Floating Barge 2:32

A SpaceX Falcon 9 rocket blasted off from Florida with a cargo ship bound for the International Space Station on Friday, and its reusable main-stage booster landed itself on an ocean platform in a dramatic spaceflight first.

The liftoff at 4:43 p.m. EDT from Cape Canaveral marked the resumption of resupply flights by privately owned Space Exploration Technologies for NASA following a launch accident in June 2015 that destroyed a different cargo payload for the space station.

Read More: SpaceX Rocket Explodes Upon Ocean Landing

About 2 and a half minutes after Friday's launch, the main part of the two-stage SpaceX rocket separated, turned around and headed toward a landing platform floating in the Atlantic about 185 miles of Cape Canaveral.

A live video feed broadcast on NASA television showed the rocket booster, its four landing legs extended, descending over the ocean before settling itself upright on the platform, roughly eight minutes after launch.

Four previous at-sea landing bids had failed. But a Falcon 9 achieved a successful ground-based touchdown in December. Friday's feat marked yet another major milestone in the quest by high-tech entrepreneur Elon Musk's launch service to develop a cheap, reusable rocket.

Read More: SpaceX Makes History: Falcon 9 Launches, Lands Vertically

The rocket's cargo ship, dubbed Dragon, was due to arrive on Sunday at the International Space Station, the $100 billion laboratory flying about 250 miles above Earth.

The delivery vehicle was packed with about 7,000 pounds of food, supplies and science experiments, including a prototype inflatable habitat, bound for the orbital outpost.