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SpaceX aims to relaunch a rocket for the first time later this year

Elon Musk's space exploration company is hoping to prove reuseable rocketry works in practice before the year is out.

The fourth Falcon 9 rocket is back in the hangar, alongside the three other rockets Elon Musk's SpaceX has successfully landed after launch, he announced in a tweet on Tuesday. What's more, the Tesla founder said that one of his reusable rockets is ready to break the surly bonds of gravity again.

The launch, planned for September or October later this year, would mark the first time SpaceX has managed to launch a used rocket and make good on SpaceX's plans for reuseable rocket flights.

SpaceX rockets are already involved in completing commerical missions. Eventually, the plan is for SpaceX to be able to reuse its rockets after just a few weeks of turnaround, drastically cutting the costs of space exploration. And, as Musk hopes, putting people on Mars within the next 10 years.