Brahe_Tycho5

Heliocentrism

Kepler tried, but was unable, to persuade Tycho to adopt the **// heliocentric model //** of the **// solar system //**. Tycho believed in a modified **// geocentric model //** known as the **// Tychonian system //**, for the same reasons that he argued that the supernova of 1572 was not near the Earth. He argued that if the Earth were in motion, then nearby stars should appear to shift their positions with respect to background stars. In fact, this effect of **// parallax //** does exist; it could not be observed with the naked eye, or even with the **// telescopes //** of the next two hundred years, because even the nearest stars are much more distant than most astronomers of the time believed possible.

Over a 20 year period of time, Tycho Brahe made consistent observations which supported the heliocentric theory proposed earlier by Copernicus. These observations were made using only a compass and a sextant. Brahe catalogued over 1000 stars. He also proved that comets were not just components of Earth's atmosphere, but actual objects traveling Over a 20 year period of time. These observations were made using only a compass and a sextant. Brahe catalogued over 1000 stars. He also proved that comets were not just components of Earth's atmosphere, but actual objects traveling through space. Brahe showed irregularities in the Moon's orbit and discovered a new star in the Cassiopeia formation. Brahe made many instruments such as the Tyconian Quadrant which were widely copied and led to the invention of improved observational equipment. through space. Brahe showed irregularities in the Moon's orbit and discovered a new star in the Cassiopeia formation. Brahe invented many instruments such as the Tyconian Quadrant which were widely copied and led to the invention of improved observational equipment.