His teeth aren't that perfect, looks like he has an overbite.
Seriously. Really enjoyed the program. One thing that occured to me when he was talking about the Voyager spaceships. We often go on about how hard it is to get stuff to the speed of light. Yet here is a 30 year old spacecraft the size of a bus sending us signals at the speed of light.
So how hard is it really
Why is it we can generate photons so easily that travel at this speed yet we can't get even the smallest particle close?