pre1900

johannas kelper

Discovery Of The Solar System


The main idea of the solar system was proposed by the Polish astronomer Nicolaus Copernicus (1473-1543) who said that "the Sun is the center of the Universe" and made the planets move around it in perfect circles (in his book entitled, "On the Revolution of the celeste sphere written in Latin and published in 1543).The German astronomer Johannes Kepler (1571-1630) supported the Copernican concept that the Sun is at the center, but gave to the planets elliptical orbits, with the Sun in one of the center of each ellipse to describe their complicated motions more correctly.

Erlay Modern World



1605 - The German mathnematician and astronomer Johannes Kepler establishes his three Laws of Planetary Motion, mathematical laws that describe the motion of planets in the Solar System, including the ground-breaking idea that the planets follow elliptical, not circular, paths around the Sun. Newton later used them to deduce his own Laws of Motion and his Law of Universal Gravitation.


Dates

1602 is when Johannas Kepler introduced first two Law of Planetary Motions .In 1611 he introduced the third Law of Planetary Motion.Also in 1631 Kepler successfully predicts the motion of Mercury.

1930

Christoph Scheiner had built a telescope based on design that Johannas Kepler had made in 1611. Johannas designs helped Galileos by replacing the lenses . This helps to reduce rounded aberrations. Astronomers find spherical aberration quite annoying as it means that they do not get perfect images when they look through their telescopes

Johannas Kepler three laws