Right - ancient distinction between the physics of our...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Right: Kepler's model of  the universe with  Saturn's sphere  outermost, showing  how the suppose  distances were set by  geometrical rules. Belief in uniform circular motion  had been a fundamental aspect of  Western astronomy for two millennia. This belief was broken early in the  17th century. Kepler, using Tycho's observational data, showed that the  Earth and the other planets all travel around the Sun in elliptical orbits.  This was the first of Kepler's three laws. It was published in 1609 in  Kepler's book on his  new astronomy,  Astronomia nova . The laws Kepler  found for the  motions of the  planets applied  equally to the orbit  of the Earth. He had  abandoned the 
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ancient distinction between the physics of our earthy sphere below the Moon and the celestial physics of a higher realm. Aristotelian physics no longer worked in the universe of Copernicus and Kepler. A new explanation of how the planets continued to retrace the same paths forever around the Sun remained a central problem of cosmology until Isaac Newton explained how objects move under gravity. He accomplished this by showing how motions in the heavens obey the same laws that determine the movement of bodies on Earth. This led the way to understanding what was increasingly seen as a mechanical universe....
View Full Document

This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

Ask a homework question - tutors are online