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・ Archips dierli
・ Archips dispilanus
・ Archips dissitanus
・ Archips eleagnanus
・ Archips elongatus
・ Archips emitescens
・ Archips enodis
・ Archips eupatris
・ Archips euryplinthus
・ Archips eximius
・ Archimedean spiral
・ Archimedean Upper Conservatory
・ Archimedes
・ Archimedes (bryozoan)
・ Archimedes (CAD)
Archimedes (crater)
・ Archimedes (disambiguation)
・ Archimedes Foundation
・ Archimedes Geo3D
・ Archimedes number
・ Archimedes Palimpsest
・ Archimedes Patti
・ Archimedes Ridge
・ Archimedes Russell
・ Archimedes' cattle problem
・ Archimedes' principle
・ Archimedes' quadruplets
・ Archimedes' screw
・ Archimedes' twin circles
・ Archimedes-lab.org


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Archimedes (crater) : ウィキペディア英語版
Archimedes (crater)

Archimedes is a large lunar impact crater on the eastern edges of the Mare Imbrium.
==Description==
The diameter of Archimedes is the largest of any crater on the Mare Imbrium. The rim has a significant outer rampart brightened with ejecta and the upper portion of a terraced inner wall, but lacks the ray system associated with younger craters. A triangular promontory extends 30 kilometers from the southeast of the rim.
The interior of the crater lacks a central peak, and is flooded with lava. It is devoid of significant raised features, although there are a few tiny meteor craters near the rim. Scattered wisps of bright ray material lie across the floor, most likely deposited by the impact that created Autolycus.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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