A brief history of astronomy

Have you ever heard the word astronomer? Or words of Astronomy? Astronomy is a branch of science which investigates the object and the content of this universe. While people who study science are called astronomers.

Extreme conditions that are difficult or impossible on earth was created in the laboratory (such as a high vacuum chamber, the material with high density, the gravitational field and a very strong magnetic fields) can be obtained in the universe. The theory of the structure and evolution of stars has been successful in explaining the sources of energy in the universe and the origin and development process of the stars.

 

This shows that the theory of stellar structure that is based on atomic physics and other microscopic objects can explain natural phenomena on a large scale. Strong gravitational field around the various celestial bodies is an interesting arena to study the theory of general relativity.

Observation of the sky phenomenon has actually been done since ancient times by the people of China, Mesopotamia, and Egypt. But astronomy as a science, emerging in Greece in the 6th century BC.

Greek Astronomy round started by Thales in the 6th century BC, who argued that the Earth is flat. Although in the same century Pythagoras had learned that the Earth is round, the first significant breakthrough in astronomy by Aristotle two centuries later. Aristotle claimed that the Earth round round, supported a number of scientific evidence.

Aristarchus not only argues that the Earth was not the center of the universe, but also stated that the Earth rotates and orbit around the Sun (heliocentric) which is the center of motion of the sky. Unfortunately this theory does not have a place at that time.

Classical Age of Greece closed Astronomy by Hipparchus in the 1st century BC, which states that the Earth is round it still; the Sun, Moon, and planets circle the Earth. Geocentric system of Ptolemy was enhanced by the 2nd century AD and is better known as the Ptolemaic system.

More than thirteen centuries accepted geocentric concept of the world community. In 1512 Copernicus opened a new history by arguing that the planets and stars move in circular orbits around the Sun. In 1609, Kepler supported the idea that by issuing a ruling that besides the three mentioned that the Sun was the center of the Solar System, also fix the planet's orbit becomes elliptical.

Telescope by Galileo's discovery not only helps strengthen the Copernican heliocentric concept, but also opens a new chapter in the development of astronomy.

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