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- Wed Jul 08, 2015 4:01 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 1547: "Solar System Questions"
- Replies: 98
- Views: 19533
Regarding Q2 on blotches/dark maria : Below is a link to a quick article about some research at Penn State discussing how, following a collision, the near side of the moon cooled differently based on the proximity with earth and the tidal lock: earthsky.org/space/dark-side-of-the-moon-mystery-solved...