Tag: SBIRS-4

  • ULA launches SBIRS-4 satellite

    United Launch Alliance launched their 2nd mission of 2018 with the successful liftoff of the Atlas V carrying the Air Forces Space Based Infrared System (SBIRS) 4 satellite which will be placed in Geosynchronous Earth Orbit (GEO). Following a one┬áday delayed due to a valve issue on the pad, the rocket lifted off at 7:48…