I tried but I don't think it was really for people who already know about the universe.
usually love Brian Cox stuff shame
there's better stuff to watch
You can find more interesting stuff on youtube..
yesterday I stumbled across
The actual youtuber seems kinda lame but the content in this video was cool.
the fact this guy is just making the lenses so old school is crazy too me, you could do the same thing at home for probably almost no investment and I bet he sells them for a fortune.
he does say it takes months of polishing though for the high end ones