Question

Gravitational force of ____keeps all the planets moving around in its fixed orbits
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Answer 1

Answer:

Gravitational force of Sun keeps all the planets moving around in its fixed orbits...

Okay!!!!!

Answer 2

Sol (Sun)

It is the Sun, which keeps all planets moving around in its fixed orbits (orbits are elliptical as by Kepler’s law). Due to it's greater mass, it is able to do it. Gravitational force depends upon mass of an object. The greater an object’s mass (object can be Terrestrial or Celestial), the greater it's gravitational attraction.