75th Atlas V Successfully Lofts SBIRS GEO-4 Infrared Warning Sentinel to High Orbit

A long exposure view tonight as ULA’s Atlas-V successfully launched America’s fourth critical Space Based Infrared System Geosynchronous Orbit (#SBIRS) spacecraft. Photo Credit: Alan Walters / AmericaSpace

After wrapping up one of its quietest years on record in 2017, with only eight launches across its Delta IV, Atlas V and Delta II fleet, United […]

ULA to Try Launching Billion Dollar SBIRS Missile Defense Satellite Again Tonight

Sunset at Launch Complex 41, where a ULA Atlas-V rocket stands ready to launch to the fourth U.S. Air Force Space Based Infrared System Geosynchronous Orbit (SBIRS GEO-4) spacecraft Thursday evening. Photo Credit: Mike Killian / AmericaSpace

UPDATE:

The first launch attempt on Jan 18 was scrubbed, below is ULA’s statement:

“Launch of Atlas […]

Fourth Critical SBIRS Missile Defense Satellite Arrives at Cape Canaveral for January Launch

SBIRS GEO Flight 4, the next Geosynchronous Earth Orbit (GEO) satellite to join the U.S. Air Force’s Space Based Infrared System (SBIRS) during assembly and test at Lockheed Martin’s satellite manufacturing facility in Sunnyvale, California. Photo: Lockheed Martin

The fourth Space Based Infrared System Geosynchronous Orbit (SBIRS GEO-4) spacecraft—a crucial war fighting satellite to […]