Newton realized that gravity is what kept the moon moving around Earth. He proved this to everyone by showing them a comet during 1680 and 1681 that followed the path of a parabola.
On March 31, 1727, Isaac Newton passed away. He died in his sleep, but leading up to, he was having digestive problems and stomach pains.
Isaac Newton's dicovery help prove many other theories and scientists ideas. For example, Gravity helped prove the heliocentric model. Newton's discovery helped science advance greatly, who knows what our world would be without him.