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File:Aristarchus crater hrp162.jpg

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Description
English: Oblique view of part of part of Aristarchus (crater), on the moon. This is Figure 165 of Apollo Over the Moon (NASA SP-362, 1978), which has the following caption:
Aristarchus is a large crater on the edge of a plateau within northern Oceanus Procellarum. In this scene the crater is viewed obliquely from the north. One of the brightest and youngest craters of its size on the near side of the Moon, Aristarchus is believed to be younger even than Copernicus. The general appearance of Aristarchus and of parts of the plateau around it led Alfred Worden, the Apollo 15 CMP, to describe this part of the Moon as "... probably the most volcanic area that I've seen anywhere on the surface." For many years before the Apollo missions, Earth-based viewers had reported telescopic sightings of transient events centered on Aristarchus. These brief, subtle changes in color or in sharpness of appearance have been suggested as evidence for volcanic activity or the venting of gases from the lunar interior. The sightings are controversial, but Aristarchus remains a center of interest. -M.C.M.
About 39 km in diameter, Aristarchus is on the borderline between medium-sized and large- sized craters. We have included it among the large craters because its welldeveloped concentric terraces are characteristic of most large craters that have not been too severely degraded. Its terraced walls, as well as its arcuate range of central peaks, are particularly well shown in this view. The walls and parts of the crater floor are extremely rough and cracked, a characteristic feature of other young impact craters of this size range, such as Tycho and Copernicus. The rough deposits in the floor are probably made up largely of shockmelted material formed at the time of the impact. The inner, rougher portions of the rim show a series of channels, lobate flows, and smooth puddlelike deposits that may represent shock-melted material deposited on the crater rim. The outer, smoother portions show the rhomboidal pattern characteristic of crater ejecta blankets.-J.W.H.
Date original 1971, published 1978
Source

Apollo 15 Panoramic camera image AS15-P-0326, cropped to show Aristarchus crater.

Immediate source: NASA History Program Office, Apollo Over the Moon, A view from orbit (NASA SP-362, 1978)
Figure 146 hrp162
Author NASA

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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02:21, 18 February 2014 996 × 765 (178,352 bytes) w:en:Jstuby (talk | contribs) {{Information |Description = Oblique view of part of part of [[Aristarchus (crater)]], on the moon. This is Figure 165 of ''Apollo Over the Moon'' (NASA SP-362, 1978), which has the following caption:<br>Aristarchus is a large crater on the edge of a...

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current05:19, 16 February 2016Thumbnail for version as of 05:19, 16 February 20161,437 × 1,066 (591 KB)Jstubyhigher resolution http://wms.lroc.asu.edu/apollo/view?camera=P&image_name=AS15-P-0326
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