Gallery: Antares rocket explodes

Watch the pre-launch news conference held Monday, April 17 at NASA’s Kennedy Space Center to preview liftoff of the Orbital ATK commercial Cygnus OA-7 cargo ship aboard a United Launch Alliance Atlas 5 rocket for the International Space Station.

A day after an explosion that destroyed an Orbital Sciences Antares rocket carrying a space station cargo ship, officials said Wednesday they hope to zero in on the likely cause of the mishap within a week or so, based on a detailed review of telemetry, analysis of video and inspection of debris.

The power and propulsion section of Orbital ATK’s next Cygnus supply ship, featuring new solar panel and fuel tank designs, arrived at NASA’s Kennedy Space Center in Florida on Wednesday to be joined with a cargo module for a Dec. 3 launch to the International Space Station.