Atlas 5-551 – Page 2 – Spaceflight Now

November 25, 2025

Breaking News

[ November 24, 2025 ] NASA, Boeing pivot Starliner-1 mission from 4-person astronaut flight to cargo-only News
[ November 23, 2025 ] SpaceX launches 28 Starlink satellites from Vandenberg on brand new Falcon 9 rocket Falcon 9
[ November 21, 2025 ] Falcon 9 rocket continues Starlink deployments with launch from Cape Canaveral Falcon 9
[ November 20, 2025 ] Falcon 9 Starlink mission marks 100th launch of the year from Florida’s Space Coast Falcon 9
[ November 18, 2025 ] SpaceX resumes early evening launches after FAA restrictions lifted News

ULA launches Atlas 5 rocket on the company’s 100th national security mission

July 29, 2024 Will Robinson-Smith

The United States Space Force 51 (USSF-51) mission was the 58th and final time an Atlas 5 rocket launches a national security payload. Liftoff happened at Tuesday, July 30, during a three-hour window that opens at 6:45 a.m. EDT (1045 UTC).

Preview: Navy craft to ride milestone Atlas-Centaur launching

January 17, 2015 Justin Ray

The 200th Atlas-Centaur rocket, history some 52 years in the making, will blast off Tuesday from Cape Canaveral to deliver a U.S. Navy mobile communications satellite into orbit.