Mayan Astronomers - 750 BC 1.) They developed a written language of hieroglyphs and invented the mathematical concept of zero. 2.) They created the first tables of the movements of the sun, moon and planets for the use in astrology. 3.) They estimated the length of the month accurately. (1 dic 751 anni a. C. – 1 giug 743 anni a. C.)
Aggiunto al nastro di tempo:
Data:
1 dic 751 anni a. C.
1 giug 743 anni a. C.
~ 8 years and 6 months