Nation of Israel and God

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Tycho Brahe was a champion of the spirographic earth centered universe which is in line with what people in ancient Israel believed.

Both were wrong. Neither Tycho nor the ancient Israelites had a proper grasp of motion and inertia.

ruveyn

Tycho Brahe's Earth centered universe was navigationaly correct.

Please, someone inform me who this Tycho Brahe guy was.

-Bill, otherwise known as Kraichgauer

Tycho Brahe was an astronomer who taught Kepler.

I feel very ignorant at the moment.
Then again, we Lutherans of German extraction know Kepler best, as we can claim him as our own.

-Bill, otherwise known as Kraichgauer

As androbot said he was a major astronomer.

Theres a big crater on the Moon named after him.

I think hes making the same point that you are that Luther was just being typical of his time- his time being just before the scientiic revolution took off- when even dedicated scientists like Tycho had the common sense to know that the earth doesnt move around like rickety peasant cart! What kinda newfangled flapdoodle is that?

The reason why Tycho
Brahe's cosmology never took off because Kepler hated him.

Tycho Brahe was the latest and greatest of the pre-telescope era astronomers. His readings were good to within 2 arc minutes (a minute is 1/60 the of a degree). This without lenses! He was a disciplined observer who made frequent observations of the heavens and kept minutely detailed records. As astronomers go he was the Hubble of his day. Now here is the payoff. He kept minute and accurate readings on the motion of Mars. After Tycho died, Kepler got a hold of Tycho's data base on the Martian apparent orbit. Kepler attempted to fit the data to circular motions a la Copernicus and he could not get better than 8 arc minutes accuracy. Kepler would not be satisfied and he worked nearly ten long years before he figured out that the orbit of Mars had to be elliptical with the Sun at one focus.

Making further use of Tycho's numbers he came up with his (Kepler's) famous three laws of motion which undid ALL the nonsense of deferents and epicycles at long last (God be praised!)
See http://en.wikipedia.org/wiki/Kepler%27s ... ary_motion.

For stuff on Tycho, see http://en.wikipedia.org/wiki/Tycho_Brahe

This broke the trail that led to the idea that the motion of planets was governed by some force exerted from the Sun. Kepler never quite got to the force of gravity but he showed the way in that direction. A hundred years after Kepler, Newton picked up the trail and he produced -De Motu- and -Principia Mathematica_ which is the ur-spring of modern physics.

None of this would have happened as early as it did without Tycho's observations and records. Tycho made modern astronomy and astrophysics possible along with Galileo's telescopes.

And now you know .............. the REST of the story!

ruveyn

Hate had little to do with it. Kepler used Tycho's number and finally figured out that the planets moved in elliptical orbits. Kepler was a number crunch, a geek, an obsessed fitter of curves to data and he broke the trail that Newton followed.

To have a Solar cosmology you first need a dynamic of motion. Newton provided that: the force of gravitation.

ruveyn

Tycho proposed an Earth centered spirographic orbit of the planets which is different than epicycles. Basically Tycho believed that the planets orbited the
Sun as the Sun orbited the Earth.

Lets see if I can get a direct response from androbot2084
say my name in you next post if you are not a bot.

Thank you very much Androbot, Naturalplastic, and ruveyn for the fascinating history lesson. I probably did learn about this gentleman way back in Western Civ in my college days, but saying when that was would be making an admission to how long ago that was!

Bill, otherwise known as Kraichgauer