Passive Seismic Experiment Package

Passive Seismic Experiment Package
	The Passive Seismic Experiment Package on the Moon
Acronym	PSEP
Notable experiments	Apollo 11 mission
Inventor	Dr. Gary Latham, Lamont-Doherty Geological Observatory; Dr. Maurice Ewing, Lamont-Doherty Geological Observatory; Dr. Frank Press, Massachusetts Institute of Technology; Dr. George Sutton, University of Hawaii;
Manufacturer	Lamont-Doherty Geological Observatory; Columbia University; California Institute of Technology Seismological Laboratory;

The Passive Seismic Experiment Package (PSEP) was a scientific experiment deployed on the lunar surface by the astronauts of Apollo 11 as part of the Early Apollo Surface Experiments Package (EASEP). The experiment's goal was to determine the structure, tectonic activity, physical nature, and composition of the Moon.^[1] PSEP was the first seismometer to be deployed on a planetary body other than Earth.^[1]

^ ^a ^b "Apollo 11: Preliminary Science Report. NASA SP-214" (PDF). NASA Special Publication. 214. January 1, 1969. Bibcode:1969NASSP.214...... Archived (PDF) from the original on April 4, 2023. Retrieved April 17, 2023.

[NASA_Preliminary_Report-1] "Apollo 11: Preliminary Science Report. NASA SP-214" (PDF). NASA Special Publication. 214. January 1, 1969. Bibcode:1969NASSP.214...... Archived (PDF) from the original on April 4, 2023. Retrieved April 17, 2023.

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