UPDATE: Orbital Sciences' first Antares rocket is now set to launch on Saturday, April 20, at 5 p.m. ET. See our latest story here: New Private Rocket Launching on 1st Flight: Watch It Live A new ...

In the wake of October's Antares rocket explosion, Orbital Sciences Corp. said on Tuesday that it would buy at least one launch on United Launch Alliance's Atlas 5 rocket for a cargo resupply mission ...

WEBVTT YEARS AGO. >> ORBITAL ATK'S MEDIUM-CLASS ANTARES ROCKET SITS PATIENTLY ON THE LAUNCH PAD IN WALLOPS ISLAND, VIRGINIA MONDA NAMED OA-5, IT'S MAIN MISSION IS TO BRING MORE THAN 5,000 POUNDS OF ...