Gallery: Antares rocket explodes

Facing pressure to find a ride into space for its commercial Cygnus cargo craft in the wake of a catastrophic rocket failure, Orbital Sciences Corp. says it has found openings in the mission manifests of the world’s busiest launch operators to accommodate resupply flights to the International Space Station next year.

A commercial Cygnus cargo freighter packed with 3.8 tons of medical and pharmaceutical experiments, technology demonstration hardware, CubeSats and crew provisions rode an Antares rocket into orbit from Virginia’s Eastern Shore on Wednesday afternoon on the first leg of a day-and-a-half journey to the International Space Station.

A two-stage Northrop Grumman Antares rocket rolled out of its horizontal integration facility Monday for the mile-journey south to launch pad 0A at the Mid-Atlantic Regional Spaceport in Virginia, where liftoff on a space station resupply mission is scheduled for Wednesday.