The BEST Episodes of Space's Deepest Secrets

Every episode ever - ranked by fan votes!

Last Updated: Apr 22, 2021

Network: Science Channel

The stories of deep-space explorers who are risking their careers, and even their lives, to lead humanity to worlds yet to be seen.

The Universe's Greatest Hits

#1 - The Universe's Greatest Hits

Season 1 - Episode 1 - Aired Apr 26, 2016

From the mission that saw Pluto for the first time to the Mars rovers, a new breed of explorers are risking their careers, and even their lives, to lead humanity to worlds we have never seen and tackle the mysteries of life itself.

star 8.00
29 votes
NASA's Greatest Moments

#2 - NASA's Greatest Moments

Season 2 - Episode 1 - Aired Apr 11, 2017

Counting down the greatest moments in NASA's nearly sixty year history, revealing the incredible stories behind the missions and discoveries that have remade our understanding of the Final Frontier

star 8.00
29 votes
Hunt for Dark Energy

#3 - Hunt for Dark Energy

Season 1 - Episode 2 - Aired May 3, 2016

World scientists are searching for Dark Energy, the biggest challenge of physics; In Europe, a multi-billion dollar satellite will map the sky from space.

star 0.00
0 votes
Death of the Solar System

#4 - Death of the Solar System

Season 1 - Episode 3 - Aired May 10, 2016

An exploration of the dramatic fate of our future descendants, the technology they’ll need to survive the end of this world billions of years from now and our options for colonizing and starting again on a new planet somewhere far from Earth.

star 0.00
0 votes
Alien Oceans

#5 - Alien Oceans

Season 1 - Episode 4 - Aired May 17, 2016

A soaring quest through the solar system’s exotic and hidden water realms, from the deep seas below the icy crust of Europa to the vast prehistoric oceans that once existed on Mars billions of years ago.

star 0.00
0 votes
Secret History of the Voyager Mission

#6 - Secret History of the Voyager Mission

Season 1 - Episode 5 - Aired May 24, 2016

Thirty-five years after leaving Earth, the Voyager spacecraft is going to leave the Solar System to tell the incredible story of a mission that was only supposed to last five years but is still going today.

star 0.00
0 votes
The Plot Against Gravity

#7 - The Plot Against Gravity

Season 1 - Episode 6 - Aired May 31, 2016

The story of how a large aerospace company, BAE Systems, began a secret project to counter the force of gravity while NASA simultaneously ran a similar ‘Breakthrough Propulsion Physics’ program.

star 0.00
0 votes
Attack of the Space Junk

#8 - Attack of the Space Junk

Season 1 - Episode 7 - Aired Jun 7, 2016

The efforts of the U.S. government and others to combat the threat posed by space junk, which could derail the future of space travel if left unchecked.

star 0.00
0 votes
Quest for the First Star

#9 - Quest for the First Star

Season 1 - Episode 8 - Aired Jun 14, 2016

The search for the first stars of the universe.

star 0.00
0 votes
When the Sun Attacks

#10 - When the Sun Attacks

Season 1 - Episode 9 - Aired Jun 21, 2016

When the sun flares up, billions of tons of superheated gas and intense radiation are propelled toward Earth; experts are trying to predict what is coming toward the Earth and how to prepare for this threat.

star 0.00
0 votes
Inside NASA's Mission to Mars

#11 - Inside NASA's Mission to Mars

Season 1 - Episode 10 - Aired Jun 28, 2016

An in-depth look at how NASA is preparing for its most ambitious and dangerous mission yet; to land a human being on the surface of Mars.

star 0.00
0 votes
Secret History of the Solar System

#12 - Secret History of the Solar System

Season 1 - Episode 11 - Aired Aug 6, 2016

The discovery of exoplanets pushes scientists to reexamine the origin of the Solar System; the evidence infers a tale of unrestrained collisions and chaos.

star 0.00
0 votes
The Truth Behind Parallel Universes

#13 - The Truth Behind Parallel Universes

Season 1 - Episode 12 - Aired Aug 13, 2016

Scientists are working to determine if parallel universes exist.

star 0.00
0 votes
Dark Secret of the Universe

#14 - Dark Secret of the Universe

Season 1 - Episode 13 - Aired Aug 20, 2016

Scientists are finally on the hunt to finally crack the dark secrets of the atoms that make up the universe.

star 0.00
0 votes
Inside a Monster Black Hole

#15 - Inside a Monster Black Hole

Season 1 - Episode 14 - Aired Aug 27, 2016

Inside the supermassive black hole that sits in the middle of our galaxy.

star 0.00
0 votes
Strangest Alien Storms

#16 - Strangest Alien Storms

Season 2 - Episode 2 - Aired Apr 18, 2017

New discoveries on alien planets reveal the most violent storms and strangest weather in the universe including the possibility of raining rubies and diamonds, frozen wastelands and hellish infernos.

star 0.00
0 votes
Black Holes: The Einstein Prophecy

#17 - Black Holes: The Einstein Prophecy

Season 2 - Episode 3 - Aired Apr 25, 2017

Researchers investigate the dark secrets of the mysterious phenomenon known as black holes.

star 0.00
0 votes
Secret History of Jupiter

#18 - Secret History of Jupiter

Season 2 - Episode 4 - Aired May 2, 2017

NASA's Juno mission reveals secrets about Jupiter, a strange world that is more like a star than a planet; learning what lies beneath the planet's violent storms provides scientists with a new understanding of the solar system.

star 0.00
0 votes
Curse of Dark Matter

#19 - Curse of Dark Matter

Season 2 - Episode 6 - Aired May 16, 2017

Recent discoveries have revealed vast clouds of dark matter in the universe; this mysterious matter could be proof that multiple universes exist; researchers investigate the secrets of dark matter.

star 0.00
0 votes
Race to Planet 9

#20 - Race to Planet 9

Season 2 - Episode 7 - Aired May 23, 2017

Scientists believe that there is an undiscovered massive planet lurking at the edge of the solar system. Join researchers as they hunt for this mysterious world, an investigation that could reveal the secret history of the solar system's formation.

star 0.00
0 votes
Rise of the Monster Stars

#21 - Rise of the Monster Stars

Season 2 - Episode 8 - Aired May 30, 2017

The most extreme stars in our universe could be the key to understanding life in the cosmos. These monster stars are among the oldest in the universe, and can be hundreds of times larger than our Sun and burn over million times brighter.

star 0.00
0 votes
Stranger Signals from Alien Worlds

#22 - Stranger Signals from Alien Worlds

Season 2 - Episode 9 - Aired Jun 6, 2017

For decades, researchers have been scouring the universe for signals from extraterrestrials. New discoveries reveal mysterious fast radio bursts from space that may be the key to confirming life in the cosmos.

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0 votes
Mysteries of Alien Volcanoes

#23 - Mysteries of Alien Volcanoes

Season 2 - Episode 5 - Aired May 9, 2017

New research into our solar system's alien volcanoes reveal shocking discoveries; many of these fiery wonders are similar to the volcanoes on Earth, and some might even have created the conditions for extraterrestrial life.

star 0.00
0 votes
Secret History of the Big Bang

#24 - Secret History of the Big Bang

Season 2 - Episode 10 - Aired Jun 13, 2017

Scientists are on a race to find the beginning of time and space: the Big Bang; cutting-edge technology helps astronomers look back in time to uncover the mysteries of our universe's creation, revealing the first moments of the cosmos.

star 0.00
0 votes
Hunt for the Hidden Cosmos

#25 - Hunt for the Hidden Cosmos

Season 3 - Episode 1 - Aired Aug 22, 2017

New telescope technology has helped astronomers to explore the never-before-seen invisible universe. These modern marvels ushered in a new age of discovery, revealing secrets of greatest enigmas in the cosmos, from giant black holes to supernovas.

star 0.00
0 votes