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APEX (Advanced Photovoltaic and Electronic Experiments), a US test spacecraft, was launched by a Pegasus rocket carried by a B-52 bomber from Edwards Air Force Base, California. The 206 kg spacecraft carried 3 diagnostic instruments including a cosmic ray monitor to check the impact or radiation in the Van Allen Belt on the other 2 target instruments.

Alternate Names

  • 23191

Facts in Brief

Launch Date: 1994-08-03
Launch Vehicle: Pegasus
Launch Site: Edwards Air Force Base, United States
Mass: 260 kg

Funding Agency

  • Unknown (United States)


  • Space Physics
  • Engineering

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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