On April 17, 2019 at 20:46 UTC the "Cygnus” privately owned U.S. unmanned supply spacecraft was launched from the Mid-Atlantic Regional Spaceport (MARS), a commercial space launch facility located at the southern tip of NASA's Wallops Flight Facility on Wallops Island, Virginia, USA. The spacecraft was orbited by the “Antares-230” rocket-carrier. The "Cygnus” CRS-11 (NG-11 “S.S. Roger Chaffee”) unmanned supply spacecraft, built by U.S. space firm Orbital Sciences Corp., was orbited on its cargo resupply mission to the International Space Station. CRS means Commercial Resupply Services. The "Cygnus” CRS-11 (NG-11 “S.S. Roger Chaffee”) is the 11^th successful flight of the Orbital ATK uncrewed resupply spacecraft Cygnus.