Weegy: Kepler's first law - sometimes referred to as the law of ellipses explains that planets are orbiting the sun in a path described as an ellipse. User: Kepler's 3rd law: harmonic law Weegy: Kepler's third law sometimes referred to as the law of harmonies compares the orbital period and radius of orbit of a planet to those of other planets. User: If the earth's relationship to the Sun were any different, life on Earth may not have been possible. True False (More)