Unexpected minerals found on the moon may not be indigenous to the area, scientists say. Instead, they now believe the minerals may have been deposited by asteroids that hit the surface. "Future studies of the moon's composition will have to show that exposed surface rocks really come from the moon and were not delivered by impacts, especially for unusual or exotic minerals," said Purdue University's Jay Melosh.
Asteroids may be responsible for odd minerals found on the moon
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