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Eddie Crater is a crater in the Elysium quadrangle of Mars at 12.3° north latitude and 217.9° west longitude. It is 89 km in diameter and was named after Lindsay Eddie, a South African astronomer (1845–1913).〔http://www.flag.wr.usgs/gov〕 Impact craters generally have a rim with ejecta around them, in contrast volcanic craters usually do not have a rim or ejecta deposits. As craters get larger (greater than 10 km in diameter) they usually have a central peak.〔http://www.lpi.usra.edu/publications/slidesets/stones/〕 The peak is caused by a rebound of the crater floor following the impact. Image:Wikieddie.jpg|Eddie Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). Image:Eddie Crater central peak.JPG|Eddie Crater central peak in Elysium quadrangle, as seen by HiRISE. == See also == * Impact crater * List of craters on Mars * Planetary nomenclature 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「Eddie (crater)」の詳細全文を読む スポンサード リンク
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