scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 808
What is the shape of the universe Brahes model of the universe can be explained best with this model below p409 Dictionary of Scientific Biography In this model Brahe describes the universe with the earth at the center The sun orbits the earth while the other planets revolve around the sun in the order of Mercury Venus Mars Jupiter and Saturn There is also a realm of fixed stars beyond the paths of the planetary orbits In contradiction with the traditional Aristotelian view of the universe Brahe believed the heavens were imperfect and could be changed Brahes model of the universe was first worked out by 1583 and printed in 1588 in De mundi aetherei recentioribus phaenomenis however his model was never presented in great detail Why is it shaped that way In spite of his extremely precise observations Brahe could not detect a parallax for even a single star If the Earth did in fact orbit the Sun the stars would have to be infinitely distant Brahe could not conceive of a universe so immense that an observer as accurate as himself could not detect any stellar parallax Even more convincing to Tycho was the fact that he believed he could measure the angular size of stars The brightest of them he thought to be 2 arcminutes across The farther away an object is the larger its true size must be in order that it have a given angular diameter Brahe could not detect as much as 1 arcminute of parallax for any star so he concluded that stars were so distant that to have angular diameters of 2 arcminutes they actual sizes would have to be twice the size of the entire orbit of the Earth If they were still farther away their diameters would have to be proportionally greater Abell Morriso and Wolff 35 In 1572 Brahe observed a supernova in the constellation of Cassiopeia where
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA