NOVA

Season 42 Episode 18: Invisible Universe Revealed

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Watch NOVA season 42 episode 18 tv series online free
Release: Apr 22, 2015

The Hubble Space Telescope's discoveries over past 25 years.

NOVAexpand_lessSeason 42
Episode 1
Vaccines—Calling the Shots
Episode 2
Rise of the Hackers
Episode 3
Why Planes Vanish
Episode 4
Surviving Ebola
Episode 5
Ben Franklin's Balloons
Episode 6
First Air War
Episode 7
Bigger Than T. Rex
Episode 8
Emperor's Ghost Army
Episode 9
Killer Landslides
Episode 10
First Man on the Moon
Episode 11
Big Bang Machine
Episode 12
Sunken Ship Rescue
Episode 13
Sinkholes—Buried Alive
Episode 14
Colosseum: Roman Death Trap
Episode 15
Petra: Lost City of Stone
Episode 16
Hagia Sophia: Istanbul's Ancient Mystery
Episode 17
The Great Math Mystery
Episode 18
Invisible Universe Revealed
Episode 19
Nazi Attack on America
Episode 20
Lethal Seas
Episode 21
Chasing Pluto
Episode 22
Nuclear Meltdown Disaster