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.

A SpaceX Falcon 9 surged up through blue skies to send a crew on its way to International Space Station where the pair of NASA astronauts who flew up last summer on Boeing’s Starliner have

The crew-swap mission will enable NASA’s Butch Wilmore and Suni Williams to return to Earth from the International Space Station.