Question

What is most likely the reason Earth moves in an orbit around the sun?

Answer 1

Answer:

Earth moves in an orbit around the sun. It is due to the gravitational force created due to the mass of the sun that pulls earth towards it. Gravitational force is responsible for the motion of Earth around the sun.

Answer 2

Answer:

The gravitational pull of the Sun.

Explanation:

The gravitational pull of the sun provides the Earth with a necessary centripetal force to make it move in an orbit around it. This gravitational pull provides the force which binds the Earth in an elliptical orbit in it's trip round the Sun.

Had Sun not been there, the Earth would move in a straight one-dimensional path until it encounters some other star/planet to hinge upon with its gravitational pull.