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

Question

Newton or Kepler?

Answer 1

Newton described what gravity did, without understanding the nature of gravity. He readily acknowledged that his work was built on previous scientists, such as Kepler and Galileo. Galileo suggested, of course, the orbits of the planets around the Sun, Kepler defined those orbits as elliptical, without defining gravity itself. So the answer is probably Newton.

Answer 2

Unit 5 Lesson 3: Astronomy: Part 1
1. The force that gravity exerts on an object is called ____. (1 point)
B. Weight
2. What is the shape of a planet's orbit? (1 point)
A. Elliptical
3. Which law states that each planet revolves so that an imaginary line connecting it to the sun sweeps over equal areas in equal time intervals? (1 point)
B. The second law of planetary motion
4. Which scientist determined the nature of the forces that keep the planets in their orbits? (1 point)
D. Newton
5. Which scientist was the first to use the telescope in astronomy? (1 point)
B. Galileo
6. The turning or spinning of a body on its axis is known as ____. (1 point)
A. Rotation
7. The moon's period of revolution is 27 1/3 days, and its period of rotation is ____. (1 point)
A. 27 1/3 days
8. Which of the following are you most likely to experience? (1 point)
C. Full moon

Answer 3

No one has proven the nature of the forces of gravity or how it actually works. There are severl theories with a handful more popular than the others but no one has proven anything. Gravity is always referred to as a generic force which attracts other objects but no one understands how this force actually works. Einstein put forth the idea that gravity is merely bent space similar to a track or groove and the planets sort of fall into these grooves and travel along them.