Question

If an Earth-like planet orbits its sun-like star at a distance of 4AU, what is its orbital period (in Earth years)? Show your work.

Answer 1

Explanation:

Third law. The ratio of the square of an object's orbital period with the cube of the semi-major axis of its orbit is the same for all objects orbiting the same primary. This captures the relationship between the distance of planets from the Sun, and their orbital periods.