Astronomy Essay Example | Topics and Well Written Essays - 500 words - 8

Astronomy - Essay ExampleAstronomical units ar utilize for any measurement which has a certain reasonable length that humans can attain or r individually. Light-years are usually reserved for objects too far away to ever be reached by peerless humans lifetime.Stellar magnitude is the size and direction of a star. This is basically the stars displacement. The difference between absolute and apparent magnitudes is that absolute magnitudes are fixed, real-time figures of informationwhereas apparent magnitudes are yet estimates based on what the human eye can see. That is the difference between the two phrases.Hipparchus primarily drew his magnitude scale using very rudimentary calculations and tools. Todays astronomers have special it slightly by using more advanced techniques and a much more modern court to the magnitude scale. Now, physics students all over use the magnitude scale developed by immediatelys most advanced and talented scientists.A. Compare the Ptolemaic and Cope rnican models of the universe. State the main precept of each theory how they are alike or different, what evidence each used to support the ideas, and how each explained the retrograde motion of the inner planets. (150 words)The Ptolemaic model of the universe stated that the universe revolved some the earth. Copernican theory stated that the model of the universe which was correct basically involved the universe revolving rough the sun. They are both alike in the fact that both models involved the universe revolving around somethingit was just that Ptolemy got it wrong. The evidence that Ptolemy used to support his claim was basically, he didnt have evidence. It was by royal ordination that the ruler in power wanted the earth to be the center of the universe. The evidence Copernicus used to turn up that the earth revolved around the sun was the entity of the eclipseshowing that the