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The earliest know appraisement from the earth to sun was in 200 B.C. Aristarchus of Samos, a man of uranology and Mathematics, made this discovery. He believed the demesne revolved around the temperateness. Aristarchus of Samos used what is known today as right- run trigonometry. By connecting Earth to woolgather, Moon to Sun, and Sun to Earth, wiz forms a right tri tip as shown below. The measure of angle a is 90 an observer on Earth can then measure the angle measure of b. Then for unitary to find the quad between Earth and Sun simply find the sine of angle c. Aritarchus of Samos would have expressed this a little differently for the sole particular of modern Trigonometry had not still been discovered.Although this is strong in theory, it had its downfalls. This mode in was proven to be very inaccurate. The Earth to Moon ratio is very small compared to the Earth to Sun ratio, which leads one to infer that angle a would measure close to 90. With the measure of angle b is close to 90 which would leave angle c very small. If a small human phantasm occurs in measuring angle b, one is left with an emasculate error in the ratio of Earth to Moon over Earth to Sun. In modern trigonometry, it is describe as 1/(sin c)2 , which is very large when c is small. Aristarchus measured angle b as 87, but in fact was 89 50 minutes. Although this error seems small, it leads to a 95% error. Aristarchus believes the Earth to Moon over Earth to Sun measured 19, but in all reality is measured as 397. But all in all Aristarchus of Samos was the first to mathematically punctuate the spatial scale of cosmos. During the time of Kepler, most people still believed the Earth was the center of the Universe. Copernicus, in 1543, published his book, De Revolutionibus, states the Sun is the center of the Universe, and the planets orbit around, yet he didnt know how the planets did so. In 1601, Kepler became the proud owner of Tycho Braches, an astronomer whom Kepler was an assi stant for, meticulous measurements of planets, stars and sun that Brache had gathered in his last 38 years.