scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 385
Copernicus and Ptolemy Astronomy is one of the oldest sciences Two of the greatest astronomers of all time are Claudius Ptolemy and Nicolaus Copernicus These men had very different ideas and theories Claudius Ptolemy was born around 100 AD and died around 165 AD He was considered one of the greatest Greek astronomers and geographers of ancient times Very little is known about him but he did his observations of astronomy in Alexandria Egypt His works are known as Almagest which means the greatest Ptolemy did not believe that the earth moved He said that since the earth is round gravity pulls everything to the center of the earth The moon sun stars and planets move around the earth at various speeds He also believed that the planets were much closer to the earth than the stars but the moon is even closer Plotemy found that the moon had an irregularity in its orbit This is called evection He also had a theory of map projection In one of these theories he miscalculated the land between Spain and China and the size of the ocean This is what led to Columbus sail in 1492 These claims and discoveries were accepted in Europe until the late fifteenth century when another astronomer questioned his findings Nicolas Copernicus was born in 1473 and died in 1543 He is known as the father of modern astronomy and a great mathematician He was very well-educated and received both a masters and doctors degree Copernicus was a Polish astronomer who believed that the sun is the center of the solar system and the earth is a rapidly moving planet His equipment was very basic and he saw things only with his eyes no other help He applied his logic and mathematics skills to work out a theory other than Plotemys
@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