What happens when an asteroid hits the earth?
depending on the size it could destroy the planet or impact in the water and not do much. It all depends on the size of said asteroid!
usually an asteroid decintigrates before it hits the earth. If an asteroid hit the Earth depending on its size, the smoke and debris of the impact would block out all sunlight to Earth. It would become unbearably cold and most life would die out. This is a theory of how the dinosaurs went extinct.this is right