Question

is johannes kepler the one who described the motion of the planets around the sun as elliptical

Answer 1

Yes, Johannes Kepler is the astronomer who described the motion of the planets around the Sun as elliptical. In the early 17th century, he formulated three fundamental laws of planetary motion, with the first law stating that the orbits of the planets are ellipses with the Sun at one of the foci. This was a significant advancement from the earlier belief in circular orbits and laid the groundwork for modern celestial mechanics.