TED-Ed: How many universes are there? - Chris Anderson

The video explores the vastness of the universe, starting with the scale of Earth, the Sun, and the Milky Way. It discusses the expansion of space and the implications of this on our understanding of the universe. The concept of a multiverse is introduced through string theory, suggesting countless possible universes. The video also delves into the idea of infinity and the complexities of quantum theory, which may imply the existence of parallel universes. Finally, it presents various perspectives on the nature of the universe, highlighting the ongoing debate among scientists and philosophers.

In what ways does quantum theory challenge our understanding of the universe?

What is the current consensus among scientists regarding the number of universes?