Jyotiḥśāstra is a type of knowledge that helps people understand the movements and positions of stars, planets, and other objects in the sky. Think of it like a big puzzle. By studying the way objects move in the sky, people can figure out how to predict where they'll be in the future.
For example, imagine playing a game of "follow the leader." If you see someone move in a certain way, you can guess where they'll be next and try to follow them there. The same goes for objects in the sky. By understanding how they move and the patterns they follow, people can predict where they'll be in the future and plan accordingly.
Jyotiḥśāstra has been used for thousands of years to study the stars and planets. Ancient people used this knowledge to create calendars, plan events, and even navigate the seas. Today, scientists and astronomers continue to use jyotiḥśāstra to study the cosmos and learn more about our universe.