1.   Some years later Newton, using his newly discovered law of gravity, proved that all objects must orbit in elliptical paths.

2.   The moon follows an elliptical path around the Earth.

3.   Johannes Kepler, who discovered that the planets move in elliptical paths around the Sun, was motivated by a mystical love of musical harmonies.

4.   Most planets have relatively circular orbits, but this one apparently orbits its star in a high elliptical path.