At about 12:40 position, it says that by the time the universe is 10 minutes old, its diameter is already 10 thousand light years.
This is an amazingly hard concept for every Joe, like me, to understand. As we used to think that nothing moves faster than light, obviously the universe initially expanded much faster than light, a lot faster. This faster-than-light-expansion concept is very hard to grasp. :(
Thank you for sharing this precious episode. Will come back to watch the rest. :)
