Maya astronomy is like the way some really smart people a long, long time ago studied the stars and planets so they could understand more about the world they lived in.
The Maya people were really good at this because they didn't have telescopes like we do today. They had to use their eyes to look up at the sky every night and keep track of what they saw. They drew pictures and made calendars to help them remember and predict what was going to happen in the sky.
They noticed that the stars and planets moved in a certain way and that certain patterns would repeat over and over again. They also noticed that certain stars were only visible at certain times of the year.
They used this knowledge to create a complex system of calendars that helped them keep track of time. They also used their knowledge of astronomy to plan important events like planting crops, celebrating festivals, and even predicting the future.
So, Maya astronomy is like a really cool way that the Maya people used to study the stars and planets and use that information to figure out important things about their lives.