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# What Is Universal Gravitation?

**Universal gravitation is the name given to the law that Isaac Newton devised to explain the gravitational attraction between two massive bodies.** Essentially, it states that the force of gravity is proportional to the sum of the combined mass of the two bodies, divided by the distance between them squared. While Newtonian physics are no longer what modern physicists use, its predictions and accuracy were accurate for objects on Earth.

Newton’s law of universal gravitation demonstrates why the planets orbit the sun, rather than vice versa. The sun has a far greater mass than the planets do, so it pulls them into orbit. Because the law also demonstrates that gravitational pull decreases with increasing distance, it explains why Pluto travels around the sun much slower than the Earth does.

Newton did not discover gravity. He expanded upon the work of Kepler and devised the equation that explained gravity’s effects. However, modern physicists know that Newton's work was incomplete. While Newton's equations work for familiar examples of gravity, such as falling apples and orbiting planets, Einstein demonstrated that gravity works much differently in places such as black holes. Einstein's version of gravity, which is even more accurate than Newton's, is the theory of general relativity.

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## What Is Newton's Law of Universal Gravitation?

A: Newton's law of universal gravitation states that the force of gravity is a universal force between all objects proportional to both masses and the square ... Full Answer >Filed Under: -
Q:
## What Is String Theory?

A: String theory is a theory that attempts to explain and group the four known fundamental interactions of the universe, which are electromagnetism, strong nu... Full Answer >Filed Under: -
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## What Is the Gravitational Constant?

A: The gravitational constant represents the proportionality constant that is employed in the Law of Universal Gravitation, discovered by Isaac Newton. The fo... Full Answer >Filed Under: -
Q:
## Did Isaac Newton Win the Nobel Prize?

A: Isaac Newton lived from 1643 to 1727. The first Nobel prizes were awarded in 1901 so Isaac Newton could not have won a Nobel prize. Full Answer >Filed Under: