science research project and need to know dates
2006-09-04 15:32:49 · 7 answers · asked by C♥ 4 in Science & Mathematics ➔ Astronomy & Space
He was the first to postulate some laws about the movements of objects in the sky. This is what makes him special. He did that somewhen around 1615 to 1625. Furthermore he was able to make predictions from his laws. These predictions could partiually been proven during his lifetime.
2006-09-05 00:19:28 · answer #1 · answered by jhstha 4 · 0⤊ 1⤋
Born in 1571, Kepler's laws originally published around 1609, as others have mentioned, basically state that
The orbit of a planet is an ellipse with the sun at one of the two foci.
A line between the sun and a planet sweeps equal areas in equal times. This shows the relationship of a planet's velocity in its orbit to its distance from the sun.
The square of the siderial period in years of a planet is equal to the cube of the semimajor axis in AU.
Kepler was a mathmatician and did a great deal of research in the geometry of regular polyhedrons. He also did research in lenses based upon the modifications of the telescope by Galileo.
The thing that makes Kepler's Laws so important is not only what they say, but that they were the foundation from which Newton was able to figure out gravity. I point which Newton, himself acknowledged when he said, "If I have seen farther than other men, it is because I stood on the shoulders of giants". He was mainly referring to Kepler and Galileo.
Kepler died in 1630.
2006-09-05 04:34:59 · answer #2 · answered by sparc77 7 · 1⤊ 0⤋
Johannes Kepler was a German mathematician and astronomer who postulated that the Earth and planets travel about the sun in elliptical orbits. He gave three fundamental laws of planetary motion. He also did important work in optics and geometry.
Kepler is now chiefly remembered for discovering the three laws of planetary motion that bear his name published in 1609 and 1619). He also did important work in optics (1604, 1611), discovered two new regular polyhedra (1619), gave the first mathematical treatment of close packing of equal spheres (leading to an explanation of the shape of the cells of a honeycomb, 1611), gave the first proof of how logarithms worked (1624), and devised a method of finding the volumes of solids of revolution that (with hindsight!) can be seen as contributing to the development of calculus (1615, 1616). Moreover, he calculated the most exact astronomical tables hitherto known, whose continued accuracy did much to establish the truth of heliocentric astronomy (Rudolphine Tables, Ulm, 1627).
2006-09-04 15:45:26 · answer #3 · answered by Lone Ranja™ 3 · 1⤊ 0⤋
he supported copericus's theory that the earth and all planets revolved around the sun, but added that they went in elliptical path instead of circular. It was in 1618 but published in 1619 as Harmonices Mundi
2006-09-04 15:36:51 · answer #4 · answered by lekhaj5 2 · 0⤊ 0⤋
He discovered that the planet's orbits are elliptical and not circular.
2006-09-04 15:35:28 · answer #5 · answered by campbelp2002 7 · 0⤊ 0⤋
check out the three laws of planetary motion.
2006-09-04 15:36:14 · answer #6 · answered by the holy divine one 3 · 0⤊ 0⤋
Might I suggest this site?
http://space.about.com/cs/astronomerbios/a/keplerbio_2.htm
2006-09-04 15:58:45 · answer #7 · answered by Helmut 7 · 0⤊ 0⤋