Join or Sign In
Sign in to customize your TV listings
By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.
Space's Deepest Secrets Season 8 Episodes
Season 8 Episode Guide
9 Episodes 2021 - 2021
Episode 1
Mystery of the Dead Planets
Wed, Mar 31, 2021
Astronomers are laying the groundwork to locate a new planet for the human race to inhabit, and the more alien worlds they discover and encounter, the more they unmask the mysterious and truly destructive nature of the cosmos.
Episode 2
Space's Great Wall
Wed, Apr 7, 202142 mins
Astronomers discover a cosmic structure one billion light years long.
Episode 3
Curse of the White Holes
Wed, Apr 14, 202142 mins
Einstein's theory of relativity predicts the existence of white holes.
Episode 4
Bermuda Triangle of Space
Wed, Apr 21, 202142 mins
Scientists have detected a region of space they have yet to understand.
Episode 5
The Giant Ice Planets
Wed, Apr 28, 202142 mins
Astronomers finally unlock the mysteries of Uranus and Neptune.
Episode 6
Secrets of the Asteroids
Wed, May 5, 202142 mins
Examining asteroids in detail; revealing how space rocks can kick-start life on other planets.
Episode 7
Space Force Declassified
Wed, May 12, 202142 mins
Discover the cutting-edge race to build the ultimate space weapon.
Episode 8
Secrets of the Hubble
Wed, May 19, 2021
A secret history of life-or-death missions has been concealed to keep the Hubble Space Telescope working since its launch; now, NASA astronauts reveal the truth behind how this complex machine continues to make astonishing new discoveries.
Episode 9
SpaceX and NASA: Mars and Beyond
Wed, May 26, 2021
Cutting-edge designs are trailblazing new spacecraft technology that aims to transport humans to Mars and beyond; now, exclusive access reveals how SpaceX experts along with NASA are on a mission to revolutionize a new age of space exploration.