Through the Wormhole is two seasons of documentaries exploring the biggest questions man has asked. It just so happens to be narrated by the man who has a voice like chocolate, Morgan Freeman.
The first video from season 1 is in a playlist. The rest are full videos.
http://topdocumentaryfilms.com/through-the-wormhole/
Season 1 episode 2. Riddle of Black Holes.
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