What did Isaac Newton find out about newton's?

Answer 1

He discovered that the gravitational force between two massive objects is proportional to their masses and inversely proportional to the square of the distance between them.

Perhaps more importantly he also showed that the force that keeps us on the ground, and the one keeping the Moon, say, in orbit is, in fact, the same. This was not at all clear at that time, because the Moon, the planets and the stars where all very far away, so why should they follow the same principles as the things we have here on Earth?

Some ancient Greeks for example thought that the Moon was kept up in the sky because it belonged there. And things fall down if we throw them up, because they belong down here.

However, Newton, using his newfound equation for gravity was able to calculate the motions of planets themselves to great accuracy. (In fact the only place where his equations starts to fail significantly is with Mercury, and that problem wasn't solved until Albert Einstein proposed his theory of general relativity in 1916.)

Answer 2

he found out that newtons can gravity