The universe is trying to kill us. In Death From the Skies! by our own Bad Astronomer, Phil Plait, counts the ways the world will end. Start worrying in a few million years about a cosmic dust collision, when the sun hits the closest spiral arm of our galaxy. Take your chances with an exploding star. Or manage to escape these threats, and you just get an extra 10^35 years before all matter decays anyway.
EventDamageOdds of fatality per lifetimePreventable?
asteroid impactLocal for a small rock, global for a big one1 in 700,000Almost 100% preventable. Identify potential impactors, then blow them up or push them out of the way
