Newtonian mechanics

In my opinion, Newtontian mechanics is the gareatest scientific discovery. This discovery was found Newton. Newton was from England, he discovered Newtonian mechanics in 1687. One day, he was reading under a tree and an apple fell on to Newton's head. He wanted to know why this happen, he started to conduct calculations, and he realized that the apple fell on his head was due to grarity. The law of gravitation has helped us realize that it only exists in earth and not in outer space.