Cygnus Orbital ATK OA-6 Liftoff

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station carrying an Orbital ATK Cygnus resupply spacecraft on a commercial resupply services mission to the International Space Station. Liftoff was at 11:05 p.m. EDT. Cygnus will deliver the second generation of a portable onboard printer to demonstrate 3-D printing, an instrument for first space-based observations of the chemical composition of meteors entering Earth’s atmosphere and an experiment to study how fires burn in microgravity.