Graham Ryder
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High Quality Content by WIKIPEDIA articles! Graham Ryder was an English geologist and lunar scientist. He was educated at the University of Wales, Swansea, receiving his B.Sc. in 1970. He then earned a Ph.D. in geology from Michigan State University in 1974. His post-doctoral work was performed at the Smithsonian Astrophysical Observatory. Dr. Ryder worked at the NASA Johnson Space Center in the Lunar Curatorial Facility for Northrup Services Inc. From 1978 to 1982 he helped in the assembly of catalogs and guides to the Apollo lunar samples. Since 1983 he was a staff scientist at the Lunar and…mehr

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High Quality Content by WIKIPEDIA articles! Graham Ryder was an English geologist and lunar scientist. He was educated at the University of Wales, Swansea, receiving his B.Sc. in 1970. He then earned a Ph.D. in geology from Michigan State University in 1974. His post-doctoral work was performed at the Smithsonian Astrophysical Observatory. Dr. Ryder worked at the NASA Johnson Space Center in the Lunar Curatorial Facility for Northrup Services Inc. From 1978 to 1982 he helped in the assembly of catalogs and guides to the Apollo lunar samples. Since 1983 he was a staff scientist at the Lunar and Planetary Institute in Houston, Texas. Much of his work concerned the geology of the lunar surface, including the history of the mare vulcanism, Petrology of lunar rocks including highland rocks and breccias, and the chronology of lunar bombardment. He was an advocate of the "3.8 Ga Cataclysmic Bombardment" theory concerning a period of sudden mass impacts of the moon and inner planets