SpaceX delays flight to replace NASA's stuck astronauts after launch pad problem

SpaceX delayed a flight to replace NASA's two stuck astronauts after a launch pad issue arose. The Falcon rocket's liftoff was set for Wednesday evening, but concerns about a hydraulic system were detected less than four hours before takeoff. The issue involved the hydraulics needed to release the rocket from its support structure.

The astronauts, already strapped into their capsule, awaited a final decision that resulted in a cancellation due to the emergency situation. SpaceX did not announce a new launch date but hinted at a possible attempt on Thursday night. The new crew will replace astronauts Butch Wilmore and Suni Williams, who have been at the International Space Station since June.