Atlas V Fueling Underway for Orbital ATK CRS-4

At Cape Canaveral Air Force Station’s Space Launch Complex 41, RP-1, rocket grade kerosene, and liquid oxygen propellant is being loaded into the Atlas V rocket. The single-engine Centaur upper stage is receiving liquid hydrogen and liquid oxygen. The two stages will boost an Orbital ATK Cygnus spacecraft on a commercial resupply services mission to the International Space Station.

Photo credit: NASA