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Mare Cognitum : ウィキペディア英語版 | Mare Cognitum
Mare Cognitum ("The Sea that has Become Known") is a lunar mare located in a basin or large crater which sits in the second ring of Oceanus Procellarum. To the northwest of the mare is the Montes Riphaeus mountain range, part of the rim of the buried crater or basin containing the mare. Previously unnamed, the mare received its name in 1964 in reference to its selection as the target for the successful impact probe Ranger 7, the first American spacecraft to return close up images of the Moon's surface. ==Origin== The basin material is of the Lower Imbrian epoch, while the basaltic mare material is of the Upper Imbrian epoch.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Mare Cognitum」の詳細全文を読む
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