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Gravity keeps the planets from shooting off in to space, while the planet's momentum prevents in from falling in to the sun. When these are balanced, an orbit is achieved.
Wiki User
∙ 13y ago
Wiki User
∙ 6y agoOnly gravity.
The other 3 forces (electromagnetic, weak nuclear, and strong nuclear) either cancel out or are simply too short range to have any effects at the distances of the planets.
Gravity is the only one of the 4 forces that is always attractive (thus cannot cancel itself out) and has unlimited range.
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What are the 2 forces not keeps the planets in their respective orbits?
Centripetal force and Gravity
What from the Sun keeps the planets in their orbits?
Gravity
What keeps planets in elliptical orbits?
Gravity and velocity (inertia) keeps planets in orbit around suns.
Who keeps the planets in their orbits?
It isn't actually a who, but a what. That what is Gravity.
How are planets kept in there orbits?
The gravitational pull of the sun keeps the planets in orbits... Although some people think it is magnetism....
Why planets and moons of planets stay in their orbits?
The forces of gravity between two masses are the cause of all orbits.
What force keeps planets and moons going in orbits?
The force of gravity causes orbits.
What is the force that along with inertia keeps the planets in their orbits?
gravity
Why do the planets orbit the sun What is the shape of those orbits?
Planets orbit the sun because gravity keeps them from escaping, and momentum keeps them moving forward. The orbits are elliptical, which is like an oval.
How do planets stay on orbit?
The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.
What keeps the planets in your solar system from floating away?
The force of the Sun's gravity keeps them in their orbits.
Which scientists determined the nature of the forces that kept the planets in their orbits?
newton
