A mobile clean room, seen here Monday, attached to the nose cone of Northrop Grumman’s Antares rocket allowed ground teams to load time-sensitive cargo into a Cygnus supply ship before its launch to the International Space Station. Credit: Alex Polimeni / Spaceflight Now
Northrop Grumman packed last-minute cargo into a commercial Cygnus supply ship Monday on a launch pad in Virginia, putting the finishing touches on a spacecraft set for liftoff Tuesday atop an Antares rocket on a mission to the International Space Station.