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1668 BCE
The first reflecting telescope
The first reflecting telescope was built by Newton. on England this was a very important key for the modern astronomy that change the history -
1656 BCE
The discovery of the saturn rings
Christian Huygens discovers Saturn's rings and Titan, the fourth satellite of Saturn. onNetherlands -
1619 BCE
the third law of planetary motion
The Third Law of Planetary Motion is announced by Kepler in his work Harmonice Mundi (Harmony of the World). -
1609 BCE
The use of the telescope
Galileo uses telescope for astronomical purposes. He discovers 4 Jovian moons, the Moon's craters and the Milky Way galaxy .on Italy -
1582 BCE
The Gregorian calendar
Pope Gregory XIII introduces the Gregorian calendar on Italy on 1609 -
1572 BCE
The discovery of a supernova
Tycho Brahe discovers a supernova in constellation of Cassiopeia.
Denmark -
1543 BCE
Theory of copernicus
Copernicus publishes his heliocentric theory of the Universe.on poland -
1420 BCE
observatory in asia
lugh Beg (1394-1449), noted astronomer, had an observatory built at Samarkand in central Asia. The observatory was a 3-story building, but also contained instruments that were outdoors. Ulugh Beg's observatory produced astronomical tables that included a catalogue of over 1,000 stars. Ulugh Beg succeeded to the trhone of the province of Transoxiana in 1447 upon the death of his father. He was murdered in 1449 by an assassin hired by his son 'Abd al Latif. -
1259 BCE
Construction of the observatory in Iran
An observatory was built for the famous Persian astronomer, Nasir al-Din al-Tusi. The patron of the observatory was Mongol ruler, Hulagu, who was addicted to astrology. The observatory, built upon a flattened hill, was named Maragha observatory. The observatory included an extensive library and many instruments set up in the open air. -
1120 BCE
the observatory in egypt
Construction of an observatory in Cairo was begun in 1120 A.D. This is possibly the first observatory built in Medieval Islam. Unfortunately, the patron of the observatory was found guilty of several crimes including communication with Saturn, and was sentenced to death.
