SpaceX is set to launch a Falcon 9 rocket carrying a cargo craft called Dragon to the International Space Station (ISS) on Monday, April 13. The spacecraft is slated to liftoff at 4:33 p.m. ET (20:33 UTC) today from the Cape Canaveral Air Force Station in Florida.

To watch the launch live, check out the SpaceX livestream, NASA’s ustream, or NASA TV.

Broadcast live streaming video on Ustream

SpaceX is the space exploration company founded by Elon Musk. The Dragon launch will be the company’s sixth commercial resupply mission for NASA. The nerve-racking part of the rocket's journey will the final stage return—SpaceX's third attempt to land a rocket on a floating platform in the Atlantic Ocean.

The purpose is to save costs. “If one can figure out how to effectively reuse rockets just like airplanes, the cost of access to space will be reduced by as much as a factor of a hundred,” said Elon Musk. “A fully reusable vehicle has never been done before.”