Discover the meanings of light and enlightenment in the fifth episode of Cosmos: A Spacetime Odyssey,
"Hiding in the Light"
Cosmos: A Spacetime Odyssey is an American science documentary
television series. It is presented by Neil deGrasse Tyson and is a
follow-up to the 1980 television series Cosmos: A Personal Voyage, which
was presented by Carl Sagan
