Orbital Sciences Following the previous explosion of Orbital Sciences' Cygnus CRS Orb-3 on October 28, 2014, an unmanned Atlas V 401 rocket carrying Orbital ATK's Cygnus CRS Orb-4 resupply mission to NASA's International Space Station launches from Cape Canaveral in the U.S. state of Florida. The mission includes 7,380 pounds of cargo. Sources: Spaceflight Now