The World Around Us

Kepler's laws involved the elliptical orbit of planets around the sun at variable speed. They move fastest when they are close to the sun.

Kepler's laws involved the elliptical orbit of planets around the sun at variable speed. They move fastest when they are close to the sun. The diagram shows the distance covered in the same time nearest to the sun (A1) and furthest from the sun (A2).

Credit: Geoff Lewis