Have we ever taken the most important picture of the universe? How much more we don't know?

Watch the full video. Learn new things about the universe. There are many things in this universe to learn. I will bring new video for you every day. Don't forget to subscribe Universe Space SL Youtube channel. For centuries, people believed that our world is the center of the universe. But then we learned that the Sun and the planets do not revolve around the Earth. Eventually, we realized that even our sun, although it is the center of our solar system, is not the center of the universe.
Instead, it was an ordinary star among the billions of stars in our galaxy. A century ago, we also thought (you almost said) that the Milky Way was the only galaxy in the universe, and again, it wasn't.
Astronomers today believe that there are about two trillion galaxies in the observable universe. So when did we learn about the big picture of the universe? Do we have a specific date that marked the birth of modern cosmology? The answer is yes. January 1, 1925 is the day we truly discovered the universe.
But what happened today that changed our understanding of the universe? This video answers this question in detail. Thank you for watching the video. I hope you have learned something new.