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.

The Earth sings about all of the aspects of this planet. Did you know that three-quarters of Earth is water?

This clip discusses the many impacts that space debris has caused on the planet Jupiter and how these collisions work.

A brief introduction of the geosphere and the biosphere.

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.