Without the Moon, We’d be Dead as Dinos
There are not nearly enough craters on Earth for the large number of asteroids that impact us every year. Over the past 250 million years, Earth should have been hit around 440 times by asteroids larger than a mile across. But scientists have found only 38 large impact craters from this period. Scientists now think that when many of them hit the Earth, they keep right on going and punch through the Earth’s crust, triggering huge volcanic eruptions.
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