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[–]magnora7[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

The sun goes through these cycles every 11 years, where it will emit a lot and then 6.5 years later be at a solar minimum and emit very little. The difference in these emissions significantly changes the density of the earth's atmosphere in high altitudes.

I thought that was interesting.