Amazing Impact Crater Where a Triple Asteroid Smashed into Mars
A triple crater in Elysium Planitia on Mars. Credit: NASA/JPL/University of Arizona.
At first glance, you many not guess that this feature on Mars is an impact crater. The reason it looks so unusual is that it likely is a triple impact crater, formed when three asteroids struck all at once in the Elysium Planitia region.
Why do planetary scientists think the three craters did not form independently at different times? (…)
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