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The theory that best explains the current universe is the big bang 13 billion to 20 millon
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A babylonian person wich recored positions of planets,times of eclipse etc
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Those who crossed over on Bering Strait into North America had traveled as far south as Argentina by this point
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End of land bridge between Britain and continental Europe. Britain becomes an island.
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Bronze introduced in Britain
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Earliest records of Greek, the earliest records of any European language
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Introduction of the Julian calendar, a purely solar calendar, to the Roman Empire.
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Muhammad, founder of the Islamic religion, was born in 570 A.D. in Mecca. He died in 632 A.D.
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Al Mamon founds the Baghdad school of astronomy.
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Chinese astronomers observe supernova in Taurus.
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Vikings discover North America
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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. The observatory was then destroyed in 1125 A.D. and the personnel were forced to flee for their lives.
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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.
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Ulugh 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..
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Rocket pioneer Konstantin Tsiolkovskii was born. Tsiolkovskii's work in early rocketry earned him the title of "Father of Astronautics". Many of his proposals concerning rocketry were later put into use including: use of liquid hydrogen and liquid oxygen as rocket fuel and multi-stage rocket design for achieving Earth orbit or interplanetary flight.
