Video: Antares rocket explodes

NASA officials say the International Space Station’s logistics chain was designed to absorb a launch failure like the mishap that destroyed an Orbital Sciences Corp. cargo craft in October, but pressure is on SpaceX to deliver supplies on time this year.

The first pair of new Russian main engines for Orbital ATK’s modernized Antares rocket has arrived at the company’s Virginia launch base as engineers prepare to return the commercial booster to flight after a catastrophic failure last year.

An Antares rocket carrying the Cygnus cargo ship has exploded moments after lift off from Wallops Island, Virginia.