Solar System

Newton found that the planets were attracted toward the Sun by a force varying depending on the distance between them. He also explained the previously unrelated phenomenas of the unpredictable orbits of comets; the tides and their changes; the precession of the Earth's axis; and motion of the Moon as effected by the gravity of the Sun.


Halley used Newton's theory to predict the path of Halley's comet. He was able to predict withen a month when the comet would come back again.