Here is all you need to know about Kepler’s Laws.
There are 3 laws.
1] Planets move around the sun in elliptical orbits, not circular orbits.
2] Planets sweep out equal areas in equal time.
3] The ratio of the periods of two orbiting objects can be used to predict the ratio of their orbital radii.
formally: (T1/T2)^2 =(r1/r2)^3
Watch this video to learn about Johannes Kepler’s life (history quiz on Friday).
Here’s a really dumb but cute video: