Live coverage: Dragon supply ship back on Earth

Confronted with pesky problems in the Falcon 9 rocket’s helium pressurization system, SpaceX has shuffled the order of the next two launches, choosing to go ahead with the liftoff of a Dragon supply ship on a cargo delivery flight to the International Space Station around April 10.

Bound for the International Space Station with a max load of fresh supplies, a commercially-operated cargo ship was mounted atop its booster rocket today for liftoff from Cape Canaveral on March 22.

A 139-foot-tall Antares rocket is slated for a predawn launch Monday from the Mid-Atlantic Regional Spaceport on Virginia’s Eastern Shore, carrying a Cygnus supply ship heading for the International Space Station.