circular
Johannes Kepler determined that all planets have elliptical orbits.
Johannes Kepler proposed that these planets orbit the sun in ellipses, not circles. That is why we have Kepler's Law of Planetary Motion.
Through years of research, and a lot of trial and error, Kepler was able to show that three laws accurately describe planetary motion. He was never able to explain WHY these laws worked, he only knew they DID.
Johannes Kepler.
Johannes Kepler
Kepler discovered the orbits of the solar system are elliptical.
Johannes Kepler determined that all planets have elliptical orbits.
Johannes Kepler proposed that these planets orbit the sun in ellipses, not circles. That is why we have Kepler's Law of Planetary Motion.
Kepler
it was Kepler
Johannes Kepler did that first.
It was Johannes Kepler 1571-1630 who produced the Laws of Planetary Motion in 1618.
Johannes Kepler is credited with that discovery.
discovered follow
Kepler's observations supported the fact that the plants orbit in an ellipse. He wrote the Laws of Planetary Motion stating all planets orbit the sun and all planets orbits are elliptical.
Through years of research, and a lot of trial and error, Kepler was able to show that three laws accurately describe planetary motion. He was never able to explain WHY these laws worked, he only knew they DID.
Johannes Kepler.