I note that this opinion piece is based on the speculation of finding only evidence of the former existence of life forms - their corpses, as it were. Certainly if we only found dead things and signs of destroyed civilizations we might have cause to wonder just how dangerous the universe really is. If we found living organisms on Mars or Europa, or actually encountered living intelligent aliens it would be a different story.

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"You miss 100% of the shots you don't take" - Wayne Gretzky