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)
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original 1972, published 1978
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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)
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NASA
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:AS17-149-22838. Els ID dels fitxers i ID alternatius són traduïts de
El lloc web de la NASA disposa d'un gran nombre d'imatges de l'Agència Espacial Russa, o soviètica, i d'altres agències no nord-americanes. Aquestes imatges no són necessàriament en el domini públic.
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: [...
{{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...
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