The Space and Missile Systems Center's Space Test Program Satellite-4 (STPSat-4) reaches its final orbit after deploying from the International Space Station, Jan. 28, 2020. The suitcase-sized satellite is a test-bed with five experimental payloads developed by the Air Force, Navy, DoD research and academic institutions with industry partner investment. (Photo courtesy of NASA)

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Photo by: NASA |  VIRIN: 200128-F-ZZ000-0004.JPG