Four SpaceX astronauts are geared up inside of a SpaceX rocket to launch Friday afternoon to the International Space Station to rescue two stuck NASA astronauts.

The flight was scrubbed on Wednesday night, and the astronauts will return to the launchpad for their trip to the International Space Station.

A launch pad problem has forced a flight delay to replace NASA's two stuck astronauts. The new crew needs to get to the International Space Station before Butch Wilmore and Suni Williams can head home after nine months in orbit.