antares_(rocket) | finalflight | 2014-10-28 <sep> antares (), known during early development as taurus ii, is an expendable launch system developed by orbital sciences corporation (now part of northrop grumman) and the pivdenne design bureau to launch the cygnus spacecraft to the international space station as part of nasa's cots and crs programs able to launch payloads heavier than 8,000 kg (18,000 lb) into low earth orbit, antares is currently the largest rocket operated by northrop grumman antares launches from the mid-atlantic regional spaceport and made its inaugural flight on april 21, 2013nasa awarded orbital a commercial orbital transportation services (cots) space act agreement (saa) in 2008 to demonstrate delivery of cargo to the international space station for these cots missions orbital intends to use antares to launch its cygnus spacecraft in addition, antares will compete for small-to-medium missions 
the antares rocket's final flight was on the 28th october 2014.no information