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Bruce Murray Space Image Library

South Pole–Aitken basin

South Pole–Aitken basin
South Pole–Aitken basin The South Pole–Aitken basin, located mostly on the Moon’s far side near the south pole, is one of the largest and oldest impact structures in the Solar System and preserves a record of ancient collisions that planetary scientists study to understand the early history of the Solar System. NASA / GSFC / University of Arizona