DSP (3)
Shown here is a replica of a Defense Support Program satellite. The satellite costs more than $400 million, orbits at an altitude of over 22,000 miles, weighs more than 5,000 pounds and is roughly the size of a bus. Flight 23 marked the end of a 36-year era of DSP satellites. The program will be succeeded by the Space-Based Infrared System program.

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Tags: aircraft
Photo by: the Space-Based Infrared System program. |  VIRIN: 071130-F-0000U-003.JPG