Many celestial bodies in our universe travel along stable, curved trajectories around larger bodies.
Identify the fundamental force responsible for keeping these orbiting bodies in their circular or elliptical paths.
The diagram below depicts a simplified model of three orbiting bodies in a stellar system.
Identify the type of celestial body represented by each label (1), (2), and (3) using the options: Planet, Satellite, Star.
Compare the time taken for body (3) to complete one full orbit around body (2) with the time taken for body (2) to complete one full orbit around body (1), and explain why these periods differ.
