I found this on YouTube. Just posted, for what it's worth. Yes, according to this guy, the physics of a merger can result in a structure within which the frequency of supernova can increase under the more likely scenario. He paints a dim picture for the likelihood of biological life surviving in a more violent type of galaxy, but importantly, he doesn't asset that all life will necessarily be extinguished, although that's always a possibility, given the right circumstances. Anyway, none of us will be around to find out how it turns out.
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