![New study reveals comet airburst evidence from 12,800 years ago](https://martianmaterial.com/wp-content/uploads/2023/08/ufo1.png)
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New study reveals comet airburst evidence from 12,800 years ago (phys.org)
Younger Dryas Impact (airburst) hypothesis continues to gain more supporting data. But more importantly it demonstrates why the only way a long-lived constantly evolving civilization could survive would be working out how to survive in a subterranean or submerged environment until they are able to leave a planet altogether.
submitted by /u/GriffinDodd
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