> is this what one would expect from comet inpact? it would but a comet impact close enough to heat the site would have pulverized the pottery so this is how we know it cant have been one.   we are also expecting the magnetic field to reach a low point some time in the early 40s and then strengthen again at the same rate so it might be 10 or more years of random events.  so in case anyone missed the freak northern lights earlier in may i have good and bad news for you. you are going to see them a lot in future.
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