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Comet Swift-Tuttle
George Costanza: Ah, ta ta, Tuttle!
From Wikipedia:
“It was then noticed that if its next perihelion passage (July 2126) was also off by another 15 days (July 26), the comet could impact the Earth or the Moon on 14 August 2126.[13]”
This would put it 14 years after the events depicted in the Rush album 2112. I’m sure the planets of the solar federation will be prepared to take action.
Oh, for a little bit of Art Bell, and his callers talking about the prelude to attack. The images are a test of the alien technology that will come eventually.