The Biggest Ideas in the Universe | 22. Cosmology

The Biggest Ideas in the Universe is a series of videos where I talk informally about some of the fundamental concepts that help us understand our natural world. Exceedingly casual, not overly polished, and meant for absolutely everybody.

This is Idea #22, " Cosmology." Perhaps more a field of study than an "idea," but it is made possible by an extremely powerful idea: that our universe is uniform and simple enough to be understandable. We go through the expansion of space, the thermal history of what makes up the universe, and a bit about dark matter and the cosmic microwave background.

My web page: http://www.preposterousuniverse.com/

My YouTube channel:    / seancarroll  

Mindscape podcast: http://www.preposterousuniverse.com/p...

The Biggest Ideas playlist:    • The Biggest Ideas in the Universe!  

Blog posts for the series: http://www.preposterousuniverse.com/b...

Background image: https://www.spacetelescope.org/images...

#science #physics #ideas #universe #learning #cosmology #philosophy