After a successful launch from Kennedy Space Center, SpaceX successfully landed the first stage of a Falcon 9 rocket on a drone ship at sea.

Recovering the booster is a part of SpaceX’s plan to reuse the first stage and lower the cost of launches.

The Falcon 9 Friday sent a Dragon capsule to the International Space Station.

On board, nearly 7,000 pounds of supplies, including science experiments for the orbiting outpost. One experiment is from a 17-year-old student looking at human genes in space.

Also on board, ‘BEAM’, an expandable habitat from Bigelow Aerospace. NASA plans to test the inflatable living space on the International Space Station with the hopes of using it for long-term missions like ones to Mars.

It’s SpaceX’s first launch to the International Space Station since June of last year.  That’s when a rocket carrying supplies to the station exploded about two minutes after lift-off.

The Dragon capsule arrives at the International Space Station on Sunday.