Photos: X-37B gallery archive

Orbital ATK has ordered another Atlas 5 rocket to launch a second commercial Cygnus cargo craft for the International Space Station.

The Orbital ATK’s Cygnus commercial resupply spacecraft, named the SS Deke Slayton II, is packed up and poised for launch to the International Space Station.

The shift in launch date is to allow more time to build in redundancy to account for the helium leak. The launch is currently scheduled for no earlier than Saturday, May 25, at 3:09 p.m. EDT (1909 UTC).