Gallery: Antares rocket explodes

These photographs span activities in March as the news media got an up-close viewing of the Orbital ATK commercial Cygnus cargo ship, its placement aboard a mobile transporter and delivery of the craft to the United Launch Alliance Atlas 5 rocket assembly building for hoisting and mating. Liftoff is scheduled for April 18.

A 139-foot-tall Antares rocket is slated for a predawn launch Monday from the Mid-Atlantic Regional Spaceport on Virginia’s Eastern Shore, carrying a Cygnus supply ship heading for the International Space Station.

A commercial Cygnus supply freighter will transport a motley mix of experiments to the International Space Station, helping scientists engaged in a range of research disciplines from studying the birth of the solar system to helping astronauts survive marathon missions in space.