A post worshipping Mayans

In the ancient America, an extensive astronomical study developed, but it wasn't a worthless study, it unveiled the eyes of many Indians to the first notion of Astronomy; a notion even more accurate than actual contemporary human systems, we are pointing Mayans.
Some Mayan Observations are well known and even famous like the one referring to the 6th Sun Birthday at December 21st, 2012.

They had their own solar calendar and know the periodicity of eclipses, shaped stones with formulas for predicting solar eclipses and Venus Orbit.
If most of the prehispanic Mexican civilizations developed hieroglyphs, Mayans reached the phonetic-alphabetic phase, also the vigesimal numerical system started by the Olmec was perfected between the III and IV centuries B.C.

The calendar begins in a zero date possibly the June 8th, 8498 B.C. in our computation of time, although not entirely sure. The Mayans also had a year of 365 days (18 months of 20 days and an intercalary month of 5 days).

 
Studies on the stars that Mayans made, continue surprising scientists. Their obsession with the movement of the heavenly bodies was based on the cyclical conception of history, and astronomy was the tool used to determine the influence of the stars on the world.Many buildings were constructed in order to stage celestial phenomena on Earth, such as El Castillo at Chichen Itza, where the landing of  God Kukulkan, a snake formed by shadows created at the corners of the building during the solstices observed. The four steps of the building add 365 steps, the days of the year. In the Dresden Codex are the calculations of the lunar, solar, Venusian cycles and frequency tables of eclipses.

 

Mayans still being a mystery. Where have they gone? Why they left?  Had they discovered something beyond our comprehension? Questions can keep going but what we've learn about them is mainly important for astronomy conception.