Will an asteroid hit the earth?
Technically, if it hits the Earth it's not an "asteroid", it's a "meteorite". And yes, meteorites hit the Earth all the time.
The Earth has been hit by an asteroid many times before. Some small, some large - as in the asteroid that made the dinosaurs extinct 65 million years ago. The last notable event was in 2008 when an asteroid (2008 TC3) hit Sudan. Many "small" asteroids "hit" the Earth every year, but they are destroyed by the Earths atmosphere before they reach the ground.
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