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A comment on Asteroid crater 520km in diameter buried deep in southeast Australia. Parent comment
What you describe doesn't make sense. The Earth's orbit is effectively constant at that timescale, as are the asteroids in the main asteroid belt - otherwise interactions with Earth's would have changed the orbit.
There are conjectures of regular extinction events on 30-60M year intervals, but the data for that isn't strong. https://en.wikipedia.org/wiki/Extinction_event#Patterns_in_f...
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What you describe doesn't make sense. The Earth's orbit is effectively constant at that timescale, as are the asteroids in the main asteroid belt - otherwise interactions with Earth's would have changed the orbit.
There are conjectures of regular extinction events on 30-60M year intervals, but the data for that isn't strong. https://en.wikipedia.org/wiki/Extinction_event#Patterns_in_f...