A lot of Scenarios have been thought to cause Human extinction but 10 occurrence have been brought together that are likely to wipe out every Human on Earth

10. A large asteroid smashes into Earth
Small asteroids fall to Earth everyday. But a larger body that wiped out all the dinosaurs is rare but could strike again according to NASA.

Read more at: http://sciencearena.tech.blog/2020/03/24/top-10-cosmic-doomsday-scenarios-that-could-wipe-out-humanity/