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the inertia pulls planets out and gravity pulls them in; the force of each of these makes us constantly orbit. There is a long complex answer to this called General Relativity (a theory put forward by Albert Einstein), but in short they orbit because of the gravity of the Sun as described above.
Gravity.
The force that pulls an object toward earth also pulls the earth toward the object.The two forces are equal. Together, we refer to them as the force of gravity.Isaac Newton developed this concept.Gravity. The Earth has more mass than the object, it pulls it towards its' center.
i know only one and it's a good one, the sun's gravity pulls the planets from flying some where else EDIT: Gravity pulls objects together and angular momentum makes sure planets orbit
there gravity pulls them into round balls.
gravity
Gravity.
Gravitational force (or gravity) is a force that pulls things together.
The sun's gravity pulls the planets.
The Sun's gravity pulls on: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Gravity is a force that pulls the planets or a force to push. Gravity is on the Earth, gravity is floated in space. So the Sun's gravity keeps the planets to orbit the Sun.
Gravity
the suns gravitational pull pulls them toward it but the planets try to escape its gravity
Gravity pulls in the sun and the planets to stay together in the orbit . The planets have gravitational force between them so they wont fall out.
it is the force that pulls us to the ground. example: when you throw an apple it falls down because of gravity.
The easy answer is gravity. The pull of a star's gravity keeps the planets in orbit in almost equal amounts of centripetal force pulls them away.============================================Another contributor clarified:The answer is 'gravity'. The more massive the body, the more gravity it has."Centripetal force" is any force that pulls awayof the path, such as swinging around a weight attached to a string. The faster you spin it, the heavier it seems to become.
The force with which gravity pulls on a quantity of matter is referred to as gravity.
The force of Gravity. Gravity is the force that pulls everything down to the ground. Hope this helps!