Aug 11 1971
From The Space Library
Dr. Paul W. Gast, Director of Planetary and Earth Sciences at MSC, explained at MSC briefing significance of photos taken by Apollo 15 astronauts; Scientists had always wondered whether earth and moon had a gradual or cataclysmic kind of history. "What we've sort of seen in the Apollo 15 site is that indeed the lunar history is in part cataclysmic." Dr. Gast said photos of Apennine Mountains confirmed that mountains were formed out of same collision that created Sea of Rains north of mountain range, involving another body as big as state of Rhode Island. "We theorized that this would be the case," Dr. Gast said, "but until now it had just been a hypothesis." Dr. Gast and his colleagues had examined about 24 of the more than 1400 photos taken on lunar surface, but they were able to make conclusions because pictures were clear and detailed. (Transcript; O'Toole, W Post, 8/12/71, A13)
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