Spec me some documentaries about the universe

[Hades]

I'm looking for interesting youtube documentaries for a 7 year old about the universe. I've always been fascinated about how the universe works and think I understand current threories fairly well. But my ability to explain it to my kids is lacking.

So I'm looking for documentaries which explain things well enough for a 7 year old.

Many thanks

 

[Hades]

Thanks all.