Since the original thread got locked, and this isn't really about the original topic anyways
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Well, let me clarify a few points. Its not a different part of the moon, in Sofias picture you can see to the left Mare Marginis and Mare Smythii. Those appear on the NASA photo as well, in the place they should be. The USGS places Al-Khwarzimi - King basin on the eastern limb (the eastern side of the far side, USGS actually divides the moon into four sections, visible side, eastern side, western side, far side, eastern and western side are not visible from earth but they dont qualify for far side by USGS) so it its not exactly at the center of the far side, its more to the left of the center. If you check the moons shadow again with this in mind you will see what I'm talking about. In fact, up until the 25th (UTC 23:14), the craters Pasteur, Hilbert and Alden (which I used as reference points before) are not obscured by the shadow.
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Its not a different part of the moon, in Sofias picture you can see to the left Mare Marginis and Mare Smythii. Those appear on the NASA photo as well, in the place they should be.
But they are a very different shape and the crater pattern about them doesn't match. I think the features you are identifying aren't what you think they are. I think that the features are Sklodowska-Currie (which comforms far better to the crater pattern, and the edge of Mare Australe all of which would certainly match the images.
The following shots are why I think that the feature can't be in the photos.
Apollo 16 Launch: 5:54:00pm GMT, 16th Apirl 1972
Apollo 16 Lunar Orbit Arrival: 8:22:28pm GMT, 19th Apirl 1972
Apollo 16 Lunar Orbit Exit: 00:09:15am GMT, 25th Apirl 1972
As you can see, it is in half shadow on Launch and by the time that Apollo 16 arrived, it was in full shadow and was until after they left.