be of its mean distance from the sun. This law was published in Harmonices Mundi, and can be reffered to as the harmonic law. This law allows astronomers to calculate the relative differences from the sun to a particular planet from the measurements of its orbital. Kepler also discovered that K is not a constant because the mass of the planets, however small, is not quite zeroed. The next scientist, Galileo Galilei, known simply as Galileo, was born in Pisa, Italy in 1564, and is considered by many scientists and historians to be the father of modern experimental science. In 1570, the Galilei family moved to Florence, Italy which is where Galileo received his education from a monastery. He was sent to the University of Piza by his father in 1581, where he studied and became a doctor. His major studies were in medicine and Aristotles philosophy, although medicine never truly interested him. He discovered an unnatural talent for mathematics and in 1585, convinced his father to let him leave the University of Pisa and went back Florence to become a tutor of mathematics. In this time of his life, Galileo began to question Aristotelian philosophy and the scientific process at that time. In his spare time, he invented the hydrostatic balance, which measured the specific gravity of an object by weighing it in water. In 1589, Galileo received an invitation to teach mathematics at the University of Pisa, a position that required him to teach Ptolemic astronomy. He gained a greater knowledge of the astronomical theory, and later became a professor at the University of Padua in 1592. He spent the next eight-teen years. He was convinced that the Copernican theory was correct, and in 1609 created his first telescope, which used magnifying glasses to see distant objects. With his latest invention, Galileo found evidence that disproved Aristotle and Ptolomey. One of his discoveries was that the moon contained numerous craters and mountains, and also ...
