2006-08-29 23:55:51 · 7 answers · asked by HunterKid! 2 in Science & Mathematics ➔ Physics
Venus and Mercury never get very far from the Sun. They are never up at midnight for example. Mars, Jupiter and Saturn appear to move backwards in the sky sometimes. These motions are difficult to explain with all the planets going around the Earth and extremely complex schemes were used to try to explain these strange motions. Copernicus realized that by assuming the Earth and all the planets go around the Sun, these motions could be more simply explained.
2006-08-30 02:26:27 · answer #1 · answered by campbelp2002 7 · 0⤊ 0⤋
Math.
2+2 have to equal 4, if you get any other answer then the Universe is wrong or the Facts are wrong.
That's how the Dwarf Pluton Pluto was found. Math with Neptune showed that something had to be beyond and MATH gave an exact position and some astronomer looked there and found that little buggar!
2006-08-30 07:07:47 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Trigonometry and the fact that planets get brighter and dimmer as they move closer to and farther from the earth. If they orbited around the earth, they would stay the same brightness because they were the same distance.
Also, it was the best way to explain the phases of the moon.
2006-08-30 07:01:00 · answer #3 · answered by 006 6 · 0⤊ 0⤋
I think the real give away was the occasional retrograde motion of the outer planets.
2006-08-30 08:12:09 · answer #4 · answered by deflagrated 4 · 0⤊ 0⤋
the info the link provided by a fellow answerer is good
2006-08-30 07:43:57 · answer #5 · answered by Dr.Gagan Saini 4 · 0⤊ 0⤋
through a telescope
2006-08-30 07:01:14 · answer #6 · answered by curious 2 · 0⤊ 0⤋
he might have done a lifetime analysis
2006-08-30 06:58:56 · answer #7 · answered by MADDY 3 · 0⤊ 0⤋