Why was Johannes Kepler important?

Answer 1

He published accurate data on the positions of stars and planets which immensely helped navigators. He made various contributions to mathematics, including faster methods of calculation. He also improved optics. However, his main contribution with the greatest impact was Kepler's Laws of Planetary Motion. These laws provided the groundwork for many great scientific discoveries, including Sir Isaac's Newton's work on universal gravitation.

Answer 2

Kepler contributed a mathematical law of motion to astronomy. Kepler's three laws are:

1. The orbit of every planet is an ellipse with the sun at one of the foci. An ellipse is characterized by its two focal points; see illustration. Thus, Kepler rejected the ancient Aristotelean and Ptolemaic and Copernican belief in circular motion.
2. A line joining a planet and the sun sweeps out equal areas during equal intervals of time as the planet travels along its orbit. This means that the planet travels faster while close to the sun and slows down when it is farther from the sun. With his law, Kepler destroyed the Aristotelean astronomical theory that planets have uniform velocity.
3. The squares of the orbital periods of planets are directly proportional to the cubes of the semi-major axes (the "half-length" of the ellipse) of their orbits. This means not only that larger orbits have longer periods, but also that the speed of a planet in a larger orbit is lower than in a smaller orbit.

( The above laws taken from wikipedia.org )

Answer 3

He discovered that each visible planet in our solar system moves in an elliptical orbit.
Johannes Kepler studied plantetary orbits using superior observations made by Tycho Brahe. He was the first to discover that the orbits were ellipses because they made the best fit to observational data. He also discovered rules (Kepler's laws) that govern the way the planets move in their elliptical orbits.

Answer 4

He was responsible for Kepler's Laws of Planetary motion. They are:

1) For an object A which follows an elliptical orbit around object B, the object B is at one of the two foci of the ellipse.

2) A line joining object A and B sweeps out equal areas for equal time intervals.

3) (Orbital period of Object A)2 = k x (semi-major axis)3

Answer 5

He didn't change the world. He DID discover that the orbits of the planets around the Sun are ellipses rather than circles, and went a fair way to discovering the nature of gravity. Without Kepler's work, Newton would probably not have been able to "discover" how gravity operates.

In reference to Kepler, Newton once wrote "If I have seen further than other men, it has been because I stand on the shoulders of giants."

Answer 6

Johannes Kepler was a German mathematician, astronomer and astrologer, and key figure in the 17th century scientific revolution. He discovered that the Earth and planets travel about the sun in elliptical orbits.

Answer 7

Johannes Kepler came up with the laws of planetary motion, which explain how planets behave in their predictable, but slightly irregular orbits around the sun.

Answer 8

Keplar verified Copernicus's Theory, thus making science a challenge to religion in explaining the Universe.

Answer 9

he came up with the laws of planetary motions

Answer 10

nicholas Copernicus,said that the sun was placed at the center and the earth and the planets moved aroud the sun in circular orbits.this idea was taken seriously by Johannes Kepler