The moon moves around the earth in circular orbit and earth moves around the sun in an elliptical orbit. The Centre of mass of earth-moon system moves around the sun in
A circular orbit
An elliptical orbit
Even Due to the gravitational force of the sun, the earth does not get attracted fully towards the core of the sun and moves around it in an elliptical orbit. Why does it not get fully attracted towards the core of the sun and also why does it move in an elliptical orbit ?