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Is the Earth periodically thrown into chaos by short-lived geological and astronomical events? The idea is considered to be somewhat heretical in scientific circles, at least when it comes to the claim that this periodicity is perhaps consistent, and due to interactions between astronomical objects and the Earth (see, for example, Immanuel Velikovsky). One recent suggestion for a mechanism behind catastrophism is a ‘dark companion’ star to our own, named Nemesis. However, at Cosmic Log.