File:Catena Gregory AS17-149-22838 hrp136.jpg

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Summary

Description	English: Oblique view of crater chain known as Catena Gregory, near Gregory crater, on the far side of the moon. Facing northwest. This is Figure 134 of Apollo Over the Moon (NASA SP-362, 1978), which has the following caption, which was apparently written prior to formal naming of the feature: This oblique view taken with the Hasselblad camera shows a crater chain on the far side, about 500 km north of Tsiolkovsky. For an idea of the scale, the large crater near the upper left corner is about 26 km wide. The origin of this chain is controversial. To some geologists, the irregular shape of many of the craters suggests that the chain was formed by the impact of a stream of ejecta from a large primary crater. The presence of herringbone ridges would have strengthened this interpretation, but none are visible; perhaps the high Sun angle and the oblique viewing angle of this scene have obscured them. To others the simple geometry of the chain suggests a volcanic origin. However, there is an apparent lack of faulting to control the alinement of the craters and an apparent absence of a blanket of volcanic ejecta. The origin of this chain may not be decipherable until, and unless, additional photography becomes available.-G.W.C. (George W. Colton)
Date	original 1972, published 1978
Source	Transferred from en.wikipedia to Commons. (Original text: Apollo 17 Hasselblad camera image AS17-149-22838. Immediate source: NASA History Program Office, Apollo Over the Moon, A view from orbit (NASA SP-362, 1978) Figure 134 hrp136)
Author	NASA

This image or video was catalogued by one of the centers of the United States National Aeronautics and Space Administration (NASA) under Photo ID: AS17-149-22838.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

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Licensing

	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.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

Original upload log

The original description page was here. All following user names refer to en.wikipedia.

Date/Time	Dimensions	User	Comment
2015-10-15 20:00	2076×2063× (852992 bytes)	Jstuby	Cleaner, color version recently available on Flickr but still in public domain. Original image rotated, border cropped, and then reduced in size by 50% due to image blurring. This image has lower contrast than the original upload. Immediate source: [...
2015-08-01 01:58	940×938× (148916 bytes)	Jstuby	{{Information \|Description = Oblique view of crater chain known as Catena Gregory, near [[Gregory (lunar crater)\|Gregory crater]], on the far side of the moon. Facing northwest. This is Figure 134 of ''Apollo Over the Moon'' (NASA SP-362, 1978), whi...

File history

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	Date/Time	Dimensions	User	Comment
current	18:06, 12 July 2016	940 × 938 (145 KB)	Vetranio (talk \| contribs)	Reverted to version as of 02:34, 17 March 2016 (UTC)
	02:34, 17 March 2016	2,076 × 2,063 (833 KB)	OgreBot (talk \| contribs)	(BOT): Reverting to most recent version before archival
	02:34, 17 March 2016	940 × 938 (145 KB)	OgreBot (talk \| contribs)	(BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2015-08-01 01:58:58 by Jstuby
	02:46, 16 March 2016	2,076 × 2,063 (833 KB)	FastilyClone (talk \| contribs)	Transferred from enwp