Source: UPI/Yahoo

March 12 (UPI) -- NASA and SpaceX on Wednesday night scrubbed the Falcon 9 launch of a flight intended to retrieve from the International Space Station astronauts Suni Williams and Butch Wilmore, who have spent nine months in orbit because of technical concerns about their Boeing capsule.

About a half hour before the scheduled 7:48 p.m. EDT launch from Pad 39A at the Kennedy Space Center, the mission was called off because of a hydraulic system issue with a ground support clamp arm, NASA said.

A new launch date and time wasn't given.

Read more: https://www.yahoo.com/news/starliner-astronauts-suni-ailliams-butch-141250493.html