Humanity’s done a pretty good job at understanding the universe in which we live, considering our infancy to it. However, even with our Hadron Colliders and spacecraft, there are still many gaps in our knowledge that even the sharpest minds can't yet grasp. 

This TED-Ed video shows the musings of Chris Anderson’s mind as he wanders through ideas of infinity, multiverses, alien life, dark matter, and all manner of things we have very little idea about.