1. Kepler's Third Law:
* This law states that the square of a planet's orbital period (the time it takes to complete one orbit) is proportional to the cube of its average distance from the Sun.
* Simply put, the farther a planet is from the Sun, the longer its orbital path and the longer it takes to complete that path.
2. Gravity:
* While the Sun's gravitational pull weakens with distance, it still affects planets far away.
* Outer planets experience a weaker gravitational pull than inner planets, meaning they move more slowly in their orbits.
Here's an analogy:
Imagine you're on a merry-go-round. The closer you are to the center, the faster you spin. The further you are from the center, the slower you move. The same principle applies to planets orbiting the Sun.
In conclusion:
The outer planets take longer to orbit the Sun because they are farther away and experience a weaker gravitational pull from the Sun, resulting in slower orbital speeds.
