kepler
it was Kepler
Kepler
that all the planets orbit around the sun, and that orbit's are not circular.
As with all the planets, the orbit of Neptune is a nearly circular ellipse.
No planet's orbit is perfectly circular. They are all elipses.
No. Planets orbit the Sun (or some other star) in ellipses.
The orbits of planets are actually elliptical, not perfectly circular. An ellipse is a stretched-out circle. The shape of a planet's orbit can be described as an ellipse with the Sun at one of the two foci.
They all do. Some planets are closer to a circular orbit than others (have a lower eccentricity), but none are exactly circular.
No planet has a perfectly circular orbit, though Venus has the least orbital eccentricity of any planet in our solar system.
Nicolaus Copernicus discovered why planets stay in orbit when he found that the planets revolve around the sun. He is credited with starting the Scientific Revolution through this discovery.
Aristarchus of Samos
Kepler discovered that the planets orbit the sun in oval shaped paths called ellipses.