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.:. دلـوعـة أبـوهـا .:.
23-11-2022 - 07:00 am
Astronomy is a branch of science that is about the study of universe. This study was even hard to understand by the people of pre-historic times and still it is a puzzle today. We have found a continuous progress in astronomy by having different astronomical theories which discussed the issue for the center of universe. All theories considered a center of universe in a different manner and it is important to understand each theory's view.
There are four astronomical theories that described the center of universe but each has its own point of view to decide the center of universe. The earliest recorded theory was geocentric view of Chaldean astronomers. They believe that sun and planets revolve around the earth which means earth is a center of universe. Pythagoras introduced a new theory known as heliocentric view which says that earth and planets revolve around sun. Both of these theories were contradicting each other and no one of these was fully established until 1543. Then Copernicus rejected the geocentric theory because according to him geocentric is not properly able to explain motion of planets. His work couldn't get the popularity due to unavailability of advance instruments but later by the work of Galileo, Kepler, and Newton the heliocentric got the popularity again. Further in 1918 heliocentric view was discarded when Harlow Shapley said sun is 35,000 light years away from center of universe. His theory was called as Galactocentric view which considered Milky Way to be a center of universe. At the end universal theory of Edwin Hubble objected Galactocentric theory because it said there are many galaxies in universe.
With each theory the last theory was discarded because all theories were based on center of universe. Geocentric says its earth, Heliocentric says it sun, Galactocentric says it’s Milky Way and Universal theory says that it’s not a Milky Way but there are million of galaxies which are moving independently. With this development of realistic mechanism a simple chronology evolved that the universe looks similar from any other galaxy as it is from the Milky Way.
Now it is clear that astronomy has improved a lot as compared to the past and it is mainly because of the advances in the astronomical instrumentation and may be we see some more advancement in future. Because of such advancement modern astronomy is divided into several subject areas.
Done by me
Rahofa
There are four astronomical theories that described the center of universe but each has its own point of view to decide the center of universe. The earliest recorded theory was geocentric view of Chaldean astronomers. They believe that sun and planets revolve around the earth which means earth is a center of universe. Pythagoras introduced a new theory known as heliocentric view which says that earth and planets revolve around sun. Both of these theories were contradicting each other and no one of these was fully established until 1543. Then Copernicus rejected the geocentric theory because according to him geocentric is not properly able to explain motion of planets. His work couldn't get the popularity due to unavailability of advance instruments but later by the work of Galileo, Kepler, and Newton the heliocentric got the popularity again. Further in 1918 heliocentric view was discarded when Harlow Shapley said sun is 35,000 light years away from center of universe. His theory was called as Galactocentric view which considered Milky Way to be a center of universe. At the end universal theory of Edwin Hubble objected Galactocentric theory because it said there are many galaxies in universe.
With each theory the last theory was discarded because all theories were based on center of universe. Geocentric says its earth, Heliocentric says it sun, Galactocentric says it’s Milky Way and Universal theory says that it’s not a Milky Way but there are million of galaxies which are moving independently. With this development of realistic mechanism a simple chronology evolved that the universe looks similar from any other galaxy as it is from the Milky Way.
Now it is clear that astronomy has improved a lot as compared to the past and it is mainly because of the advances in the astronomical instrumentation and may be we see some more advancement in future. Because of such advancement modern astronomy is divided into several subject areas.
Done by me
Rahofa
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