One of the biggest impact craters on the moon is mysteriously shaped like a three-ringed bull’s-eye. After decades of deliberation, scientists said they may have finally figured out how those rings came to be.
from Space.com ift.tt/2eK6srI
One of the biggest impact craters on the moon is mysteriously shaped like a three-ringed bull’s-eye. After decades of deliberation, scientists said they may have finally figured out how those rings came to be.
from Space.com ift.tt/2eK6srI
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