ELI5: Explain Like I'm 5

Timeline of Chinese astronomy

Well, long long time ago, even before mommy and daddy were born, there were people in China who looked up at the sky and wondered about those shiny things up there. They saw stars, and the moon, and the sun, and they noticed that they moved and changed position. They got curious about how the sky worked and started paying attention to these changes.

As they looked at the sky more and more, they realized that the changes in the sky could help them understand when to plant crops, when to harvest, and when the seasons would change. They called these special people who watched the sky "Astronomers".

The very first Chinese astronomer we know about was the Yellow Emperor. He was actually an ancient Chinese emperor who lived over 4,000 years ago, and he is said to have invented a kind of calendar. His calendar helped people understand the movements of the moon and sun and kept track of important dates.

Over the years, many other Chinese astronomers studied and built upon the work of the Yellow Emperor. They observed the sky and recorded what they saw. They created new instruments to measure and observe the movements of the stars and planets. They even built observatories (big buildings with telescopes) to help them see the sky better.

As time passed, Chinese astronomers discovered many new things about the sky. They figured out that there were five planets that moved in a strange way and named them the "Wandering Stars". They also discovered constellations and named them after animals, like the Big Dipper, which was called the "Seven Stars of the Northern Dipper".

Later on, during the Han Dynasty, astronomers started using a new kind of calendar that made use of the movements of the sun and moon. They even created special measurements and symbols for things like the lunar phases and solar eclipses. This new calendar was so accurate that it became the standard calendar for all of East Asia.

Today, Chinese astronomy has continued to evolve and contribute to our understanding of the universe. Chinese astronomers have built advanced telescopes, discovered new stars and galaxies, and even launched their own spacecraft to explore space. All of this started because people in China looked up at the sky and were curious about how it worked.