Space Shuttle Launch Scrubbed

The Endeavour Space Shuttle launch has been scrubbed early Friday morning.

Shuttle Launch Director Mike Leinbach has scrubbed today’s STS-134 launch attempt because of an issue associated with Auxiliary Power Unit 1 heaters. There will be at least a 48-hour scrub turnaround while engineers assess the issue.

NASA Television will air a news conference later this afternoon.

Here is a picture of the crew members for space shuttle Endeavour’s STS-134 mission: Commander Mark Kelly, Pilot Gregory H. Johnson and Mission Specialists Michael Fincke, Greg Chamitoff, Andrew Feustel and European Space Agency astronaut Roberto Vittori.