Carroll Alley (June 13, 1927–February 24, 2016) was an American physicist. He was the principal investigator on the Apollo Program's Lunar Laser Ranging Experiment, which significantly restricted the possible range of spatial variation of the strength of the gravitational interaction. Alley was a student of Robert Henry Dicke.
Alley developed some of the earliest important laboratory tests of Albert Einstein's theories of relativity. In recent years he has become known for his controversial alternative theories of gravitation. He was a physics professor at University of Maryland, College Park, emeritus since 2008, until his death on 24 February 2016.
- "NASA - Apollo 11 Science Experiment Still Running". nasa.gov. Retrieved 2016-12-26.
- National Academy of Sciences; Office of Home Secretary (1999). Biographical Memoirs: V.77 (Biographical Memoirs: A Series). Washington, D.C: National Academies Press. p. 89. ISBN 0-309-06644-1.
- "Carroll Alley: June 13, 1927 – February 24, 2016 | UMD Physics". umdphysics.umd.edu. Retrieved 2016-12-26.
- Carroll Alley's University of Maryland page
- Research group at University of Maryland
- Oral History interview transcript with Carroll O. Alley 19 May 2006, American Institute of Physics, Niels Bohr Library and Archives
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