Supermassive Black Holes 23 years old

"Horizon" examines the recent discovery of supermassive black holes, which spawn galaxies even as they threaten to destroy everything in their path.

Credits

Supermassive Black Holes Cast

Name	Character
John Shrapnel He was 58, 77 years old when he died	as Narrator

Supermassive Black Holes Crew

Name	Department