This clip states how far everthing is from the Earth and how small Earth really is relative to the universe. Neil deGrasse Tyson helps us understand the scale of our planet.
This clip describes that, during the 16th Century, much of humanity believed that the Earth was the center of the universe, except for one man: Copernicus. Copernicus theorized that the Earth actually revolved around the sun, to scrutiny of the church. Giordano Bruno believed Copernicus and read Lucretius' banned book, which expanded his thinking that the universe was unbounded.
How many planets are in the solar system? How did it form in the Milky Way galaxy? Learn facts about the solar system's genesis, plus its planets, moons, and asteroids.