Question

what are the kepler three laws

Answer 1

1) All planets move about the Sun in elliptical orbits, having the Sun as one of the foci.
(2) A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time.
(3) The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun

Answer 2

Kepler's 3rd law :
the square of its period of revolution around the sun is directly proportional to the cube of the mean distance of a planet from the sun