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NSSDCA ID: 1958-007A-03

Mission Name: Pioneer 1
Principal Investigator:Dr. Maurice Dubin


A diaphragm/microphone micrometeorite detector assembly that permitted a two-level discrimination of impact energy was designed to determine micrometeorite density in interstellar space. The area of the exterior diaphragm equaled a predetermined fraction of the total surface area of the spacecraft. Results were limited because of a vehicle failure which caused the spacecraft to reenter the atmosphere over the South Pacific on October 12, 1958.

Alternate Names

  • Pioneer1/Micrometeorite


  • Planetary Science: Small Bodies

Additional Information

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



NameRoleOriginal AffiliationE-mail
Dr. Maurice DubinPrincipal InvestigatorNASA Goddard Space Flight Center
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