Question

Which scientist determined the nature of the forces that keep the planets in their orbits?

Answer 1

newton  determined the nature of force that keeps the planets in their orbit .for example gravitational force

Answer 2

Sir Isaac Newton

Step-by-step explanation:

Sir Isaac newton found that, it is because of sun's gravity, the planets are revolving around it. Otherwise the planets would be moving in a straight line.

He believed that, in the same way an apple is attracted by the earth, planets are attracted by the sun. Since the planets have a linear velocity they move around the sun in an orbit instead of falling into the sun by its gravitational pull