I understand that meteor showers are due to the Earth passing through the debris left by a comet, but shouldn’t the Earth clear out any lingering meteors after a few revolutions?
In: Planetary Science
You’re driving slowly around the block, it takes you one year to do a lap.
One of your neighbors always leaves a mess on the road in front of their house. Every year you drive past their house and hit a bunch of crap they left on the road. It just depends on the year as to how much stuff is there or if you hit it or not.
In astronomy words. Your annual trip around the block/sun runs through a debris field.
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