My wife Jill assures me that 5 years old is too young for teaching quantum physics to my kids so I “went big”, skirted the rule – and was trying to explain general relativity with regards to the entire universe, and that led into if the universe had an end, and that led into me explaining that there wasn’t time outside the edge of the universe. More importantly in the midst of my kids looking like I was torturing them; I found this teaching aid and video nugget. It is 6 minutes but one of the coolest videos I have seen.

- Jack