Ancient Cosmology

 Ancient Cosmology

 Ancient civilizations:

 They had different ideas about what the universe was like. But obviously, people started stargazing long before the early civilizations grew up. When they learned how to write and read they started recording what interested them. 

The Greek Astronomers:

Astronomers grew in leaps and bounds when many Astronomers, philosopher, starwatchers started actively participating and making detailed records . Perhaps the greatest Greek Astronomers was Hipparchus of 150 BC, who compiled a catalogue of the positions of more than 800 stars besides establishing a magnitude scale to measure star brightness, still in use. 

The Arab Astronomers:

In c. 820 Almagest got translated to Arabic; c. 1428 Ulugh Beigh founds observatory in Samarkand. During those times the famous Arab ruler of Iraq, Caliph Harun Al-Rashid, patronised arts and science. 

The Indian Astronomers:

Aryabhatta, Bhaskaracharya, Varahamira, etc.