What did the Mayans discover in astronomy? The Maya observed the sky and calendars to predict solar and lunar eclipses, the cycles of the planet Venus, and the movements of the constellations.
Why were the Mayans so good at astronomy? The Classic Maya in particular developed some of the most accurate pre-telescope astronomy in the world, aided by their fully developed writing system and their positional numeral system, both of which are fully indigenous to Mesoamerica.
What was the most important accomplishment of Mayan astronomy? #4 The Maya were great astronomers
The Maya calculated the length of the year to be 365.2420 days (actual approx value is 365.2422 days). This is more accurate than the value of 365.2425 which is used in the Gregorian calendar.
Did the Mayans have astronomy? Mayan Astronomy and Calendar-Making
They also used astrological cycles to aid in planting and harvesting and developed two calendars that are as precise as those we use today. The first, known as the Calendar Round, was based on two overlapping annual cycles: a 260-day sacred year and a 365-day secular year.