National Air and Space Museum (U.S.). Center for Earth and Planetary Studies.

The Center for Earth and Planetary Studies (CEPS) is a scientific research unit within the Collections and Research Department of the National Air and Space Museum, Smithsonian Institution. CEPS performs original research and outreach activities on topics covering planetary science, terrestrial geophysics, and the remote sensing of environmental change.

CEPS was established in 1974 as part of a formal program of research at the Museum. At the same time, the National Aeronautics and Space Administration (NASA) transferred its collection of lunar and scientific maps and photographs to CEPS.

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