IRAS was the completed infrared observatory launched on 25 January 1983 UTC by Delta 3910 from Vandenberg. It surveyed the sky for about ten months before its liquid-helium cryogen was exhausted.
IRAS was the completed infrared observatory launched on 25 January 1983 UTC by Delta 3910 from Vandenberg. It surveyed the sky for about ten months before its liquid-helium cryogen was exhausted.