This video reflection is about teaching astronomy and how the theories came to be.
In ancient Grecian times, there was very little known about our solar system, how it works and the way it moves. Most of the theories people had come up with were based on very rough assumptions and estimates. The most popular theory of the time was that the moon, sun and stars were all moving in the sky because if Earth was constantly moving, we would feel it. Obviously, times have changed since then but it took a while to get there.
Many astronomers and mathematicians had worked and worked at finding a definite answer to how our solar system works. Some of the first drawings of our universe held Earth in the middle with the moon opposite it, and then the sun opposite the moon. The stars were drawn to be circling around the earth. Obviously, over time more and more theories had been made and astronomers had been taking more steps to where we are today. One astronomer who has brought us to where we are today was Galileo. Galileo built a telescope and pointed up to the night sky. He proved to everyone that not everything revolved around the earth. Galileo discovered that the planet Jupiter seemed to be host to 4 moons of its own which was the first direct evidence to his theory. His work later went on to help create the theory we have today. That all the planets orbited around the sun which means in order for the sun, moon and stars to move across our sky, our earth must be rotating.
Finally, I have a few question to ask. Firstly, why did people, before all the technology was invented, even think about exploring space if they weren’t really sure it even existed? Secondly, how long did it take to develop and understand the theories of space and our solar system we hold today? And lastly, do you think our understanding of space could change more in coming years or do you believe we know close to everything?
Thank you : )