What is an Orbit?

How the orbit of the planets is dictated by mass and the force of gravity. Physics - Our Solar System - Learning Points. The curved path of one object around another is its orbit. Objects orbit due to the effects of gravity. The gravitation pull between two objects depends on their mass and distance. As the Sun is the largest object in our Solar System, all the planets orbit around it. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.