Space's Deepest Secrets

A new breed of explorer has taken space travel beyond the moon to unlock and reveal first-ever views of alien worlds and cosmic bodies.
Mystery of the Dead Planets
S7 E1

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.

Space's Great Wall
S7 E2

Astronomers make an extraordinary discovery when they uncover a cosmic megastructure that's 1 billion light years long, and investigators race to decode the hidden forces that shape the most massive and mysterious structure known in the universe.

Curse of the White Holes
S7 E3

Einstein predicted strange cosmic phenomena known as white holes, but scientists have yet to prove they exist; as experts investigate the tiny black holes that hide in the most ancient parts of the universe, they might finally find the smoking gun.

The Giant Ice Planets
S7 E4

Astronomers are finally unlocking the mysteries to the alien underworlds of Uranus and Neptune; experts reveal how an ancient mega-collision and a missing twin planet could uncover the secrets of these strange and frozen worlds.

Hunt for the Mars Aliens
S6 E2

NASA's brand-new Mars rover is on the hunt for alien life; scientists embark on a search for fossilized remains.

Killing the Milky Way
S6 E3

Across the Milky Way, galaxies are going dark, and scientists don't know why the stars are losing their shine; astronomers race against time to uncover the truth behind how galaxies are born and how they die before all of the lights go out.

Secrets of the Asteroids
S6 E5

NASA's mission to investigate asteroids in more detail than ever before; revealing how space rocks can kick-start life on other planets and possibly hold answers to the secrets of the solar system.

Dark Secrets of the Solar System
S5 E5

New evidence is rewriting the history of the solar system; using the latest discoveries and cutting-edge technology, experts investigate to see if the cosmic neighborhood once featured oversized alien Earths and a second Sun.

Is the Universe a Hologram?
S5 E6

New evidence has convinced some of the world's greatest physicists that the universe is a hologram, and using cutting-edge technology, they investigate the secrets of black holes and space-time to build the case for this game-changing discovery.