Here's the gist:
* The farther a planet is from the Sun, the longer its orbital period (the time it takes to complete one revolution).
More specifically, the law states:
The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.
* Semi-major axis: This is basically the average distance of a planet from the Sun.
* Orbital period: This is the time it takes for a planet to complete one orbit around the Sun.
Mathematical expression:
T² ∝ a³
Where:
* T = orbital period
* a = semi-major axis
Example:
* Mars is farther from the Sun than Earth.
* Mars takes longer to orbit the Sun (687 Earth days) than Earth (365 days).
Why this relationship exists:
This relationship arises because of the balance between the Sun's gravitational pull and a planet's inertia (tendency to move in a straight line). Planets farther from the Sun experience a weaker gravitational pull, which means they need to travel slower to maintain their orbit.
Let me know if you'd like a more detailed explanation or examples!
