This video was about the planets, stars, the moon, and the sun, and how they move. It was also about the progress we have made in understanding the way space works.
The first face I learnt was that the ancient Greeks believed that the Sun, Moon, and stars rotated around Earth, in perfect formation. The second fact I learnt was that the reason this system was wrong (besides the fact that the Earth rotates around the sun) was that the stars do not move in perfect formation. They move back and forth in space. Finally I learnt that in the 1700’s Galileo Galilei an astronomer built the very first telescope and one of his biggest discoveries was that Jupiter has four moons.
The first question I had was; what other discoveries did Galileo Galilei make? And; were there any other other cultures that had a big role in space understanding, or was it just Greece?
My understanding was that we still have a long way to go in space understanding.