Gallery: Antares rocket explodes

A Northrop Grumman Antares rocket stands on pad 0A at Wallops Island, Virginia, on a frigid morning hours before a planned liftoff with more than 8,000 pounds of cargo heading for the International Space Station.

A Northrop Grumman Antares rocket rolled out to its launch pad on Virginia’s Eastern Shore early Tuesday, setting the stage for liftoff Saturday on a resupply flight to the International Space Station that will debut an upgraded launcher and Cygnus cargo vehicle capable of hauling heavier payloads into orbit.

Signs that a launch to the International Space Station is approaching are obvious this week at Cape Canaveral, with the Atlas 5 booster rocket beginning to take shape and the commercial resupply ship heading to its propellant depot.