The force that keeps the planets in orbit around the Sun is known as gravity. Gravity is a fundamental force of nature that is defined as the attraction between any two objects with mass. The more massive the objects and the closer they are to each other, the greater the force of gravity between them. In the case of the planets and the Sun, the mass of the Sun is so large that it exerts a tremendous gravitational force that pulls the planets towards it. At the same time, the planets are moving forward in their orbits at just the right speed so that the force of gravity from the Sun constantly pulls them towards it, but they don't fall into it.
Gravity also plays a role in keeping the planets in their specific elliptical orbits. As the planets move in their orbits, they experience gravitational pulls from other planets and even other objects in the solar system. These gravitational interactions can cause the shape of the orbit to change over time. However, the Sun's gravity remains the dominant force that keeps the planets in their general orbits around it.
The concept of gravity and its role in keeping the planets in orbit was first proposed by Sir Isaac Newton in his law of universal gravitation. His work revolutionized the study of astronomy and provided a new understanding of the physical laws that govern the behavior of objects in space. Today, scientists continue to study gravity and its effects on the solar system and the universe as a whole, using advanced technology and mathematical models to gain a deeper understanding of this fundamental force.
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