Space's Deepest Secrets

The stories of the men and women who pushed their ingenuity and curiosity beyond the limits to uncover some of the most groundbreaking findings in the history of space exploration.

Genre: Documentary

Cast:David O'Brien , Michelle Thaller , Hakeem Oluseyi , Phil Plait , Grant Tremblay , Carly Howett , Laura Danly , Brian Greene , Caleb Scharf , Alex Filippenko , Parker Sawyers , Seth Shostak , Peter H. Schultz , Chris McKay , Carolyn Porco , Bob Nichol , Risa Wechsler , Meenakshi Wadhwa

1Season 1

S1.E1 ∙ The Universe's Greatest Hits

Tue, 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.

2Season 1

S1.E2 ∙ The Hunt for Dark Energy

Tue, May 3, 2016

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 the secrets of the greatest enigmas in the cosmos, from giant black holes to supernovas.

3Season 1

S1.E3 ∙ Death of the Solar System

Tue, 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.

4Season 1

S1.E4 ∙ Alien Oceans

Tue, 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.

5Season 1

S1.E5 ∙ Secret History of the Voyager Mission

Tue, 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.

6Season 1

S1.E6 ∙ The Plot Against Gravity

Tue, 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.

7Season 1

S1.E7 ∙ Attack of the Space Junk

Tue, 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.

8Season 1

S1.E8 ∙ Quest for the First Star

Tue, Jun 14, 2016

The search for the first stars of the universe.

9Season 1

S1.E9 ∙ When the Sun Attacks

Tue, Jun 21, 2016

When the sun flares up, billions of tons of super heated 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.

10Season 1

S1.E10 ∙ Inside NASA's Mission to Mars

Tue, 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.

11Season 1

S1.E11 ∙ Secret History of the Solar System

Sat, 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.

12Season 1

S1.E12 ∙ The Truth Behind Parallel Universes

Sat, Aug 13, 2016

Scientists are working to determine if parallel universes exist.

13Season 1

S1.E13 ∙ Dark Secret of the Universe

Sat, Aug 20, 2016

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

14Season 1

S1.E14 ∙ Inside a Monster Black Hole

Sat, Aug 27, 2016

The genius of Einstein's theory of relativity was the first evidence that black holes might exist, but scientists still do not know what really happens inside of one. Follow the researchers investigating the dark secrets of this mysterious phenomenon.

1Season 2

S2.E1 ∙ NASA's Greatest Moments

Tue, 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

2Season 2

S2.E2 ∙ Strangest Alien Storms

Tue, 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.

3Season 2

S2.E3 ∙ Was Einstein Wrong

Tue, Apr 25, 2017

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

4Season 2

S2.E4 ∙ Black Holes: The Einstein Prophecy

Tue, Apr 25, 2017

5Season 2

S2.E5 ∙ Secret History of Jupiter

Tue, May 2, 2017

Recent discoveries by NASA's Juno mission reveal new secrets about Jupiter, a strange world that is more like a star than a planet. As scientists uncover what lies beneath its violent storms, our understanding of the solar system could change forever.

6Season 2

S2.E6 ∙ Mysteries of Alien Volcanos

Tue, 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.

8Season 2

S2.E8 ∙ Race to Planet 9

Tue, May 23, 2017

Scientists believe that there is an undiscovered massive planet lurking at the edge of our 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.

9Season 2

S2.E9 ∙ Rise of the Monster Stars

Tue, 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.

10Season 2

S2.E10 ∙ Stranger Signals from Alien Worlds

Tue, 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.

11Season 2

S2.E11 ∙ Secret History of the Big Bang

Wed, Jun 14, 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 hat happened in the first moments of the cosmos.

1Season 3

S3.E1 ∙ Hunt for the Hidden Cosmos

Tue, Aug 22, 2017

2Season 3

S3.E2 ∙ When Meteors Attack

Tue, Aug 29, 2017

Meteors are a deadly threat for our planet, but new technology may provide a way for Earth to fight back when they attack. Join experts as they uncover the mysteries behind these fascinating and terrifying celestial objects.

3Season 3

S3.E3 ∙ Inside the New Space Race

Tue, Sep 5, 2017

Space entrepreneurs are on a race to transform space travel to create a home for humans beyond Earth. In this twenty-first century Space Race, modern day visionaries as they plan regular rocket launches, space hotels, and colonies on Mars.

4Season 3

S3.E4 ∙ Search for Alien Earths

Wed, Sep 13, 2017

Astronomers and researchers are on the hunt for the groundbreaking discovery that confirms extraterrestrial life. Using state-of-the-art technology like the Kepler telescope, scientists examine thousands of exoplanets in search of another Earth.

5Season 3

S3.E5 ∙ Cassini's Grand Finale

Tue, Sep 19, 2017

Go inside the final moments of NASA's Cassini mission, a 20-year project to explore Saturn and its moons. Cassini revealed the secrets of strange new worlds that could harbor alien life, changing everything we know about our Solar System.

6Season 3

S3.E6 ∙ The Sun's Greatest Mysteries

Tue, Sep 26, 2017

The latest discoveries reveal the mysterious and ever-changing nature of our Sun. Astronomers are only now beginning to understand the vast power of our giant star, and new ground-breaking investigations show it like never before.

7Season 3

S3.E7 ∙ Expedition Extraterrestrial

Tue, Oct 3, 2017

This episode is about the possibilities of finding life in our solar system. It has in depth views and information about Mars, Europa, Enceladus, and Titan.

8Season 3

S3.E8 ∙ When Black Holes Collide

Tue, Oct 10, 2017

An exploration of gravitational waves.

1Season 4

S4.E1 ∙ The Time Travel Enigma

Tue, May 15, 2018

Time travel is less impossible than we think, and the newest discoveries in space and theoretical physics have us on the brink of cracking one of the universe's greatest puzzles.

2Season 4

S4.E2 ∙ Mission to the Red Planet

Wed, May 23, 2018

The latest science reveals what it would take to build colonies on Mars, and how our future on the Red Planet might be closer than we think.

3Season 4

S4.E3 ∙ Hunt for the edge of the Universe

Wed, May 30, 2018

New discoveries are helping experts map the entire universe, and they are finding strange truths about the cosmos and its unimaginable size.

4Season 4

S4.E4 ∙ Journey to Alien Earths

Wed, Jun 6, 2018

New discoveries of alien earths reveal vital clues in finding extraterrestrial life. Using the latest science and technology, experts reveal the strange landscapes and oceans of these distant worlds.

5Season 4

S4.E5 ∙ Wrath of the Black Hole

Wed, Jun 13, 2018

New discoveries change everything known about black holes, and using the latest science and technology, experts reveal secrets to the mysterious behind these strange and deadly places

6Season 4

S4.E6 ∙ New Race to the Moon

Wed, Jun 20, 2018

New discoveries reveal that our Moon could be the next home for human life, triggering a new international space race to make it the home of humanity's first space colony.

7Season 4

S4.E7 ∙ Mars: The Next Frontier

Wed, Jun 27, 2018

Modern-day explorers are competing in a new space race to send the first people to Mars, and cutting-edge technology might make the Red Planet the next home for humans life.

8Season 4

S4.E8 ∙ Secret History of the Juno Mission

Wed, Jul 11, 2018

NASA's Juno mission is the closest we've ever explored Jupiter, and its incredible images reveal the Gas Giant's deepest secrets and how this deadly world helped create our solar system.

9Season 4

S4.E9 ∙ Mystery of the Northern Lights

Wed, Jul 18, 2018

The aurora borealis is one of Earth's most incredible sights, and new discoveries finally explain why these mysterious lights appear and what they reveal about the Sun's sinister and deadly powers.

10Season 4

S4.E10 ∙ Pluto's Strange Secrets

Sat, Oct 13, 2018

NASA's mission to Pluto gathered the first close-up pictures of this strange and distant world, and now, new discoveries and the latest science reveal the secrets of its alien features, which could point to extraterrestrial life.

1Season 6

S6.E1 ∙ Mystery of the Alien Asteroid

Tue, Mar 19, 2019

When a strange alien object is discovered speeding through our solar system, experts race to uncover if it's real evidence of extraterrestrial contact or a deadly asteroid on a collision course with planet earth.

2Season 6

S6.E2 ∙ Secrets of the Seven Earths

Tue, Mar 26, 2019

The new discovery of seven alien Earth-like planets in a faraway solar system is a major milestone in our hunt for extraterrestrial life, and experts investigate the secrets of TRAPPIST-1's mysterious worlds to reveal if we're truly alone in the universe.

3Season 6

S6.E3 ∙ Alien Hell Storms

Tue, Apr 2, 2019

Jupiter, Saturn, Uranus, and Neptune are homes to the deadliest storms in our solar system, and new discoveries reveal the secrets of this hellish alien weather, helping experts understand these alien worlds better than ever.

4Season 6

S6.E4 ∙ Finding Alien Moons

Tue, Apr 9, 2019

New discoveries are helping experts in their search for the first alien moon outside our solar system, which could be Earth-like worlds with the potential for life.

5Season 6

S6.E5 ∙ Dark Secrets of the Solar System

Tue, Apr 16, 2019

New evidence is rewriting the history of our solar system, and using the latest discoveries and cutting-edge tech, experts are investigating if our cosmic neighborhood once featured oversized alien Earths and a second Sun.

6Season 6

S6.E6 ∙ Is the Universe a Hologram?

Tue, Apr 23, 2019

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

7Season 6

S6.E7 ∙ Curse of the Comets

Tue, Apr 30, 2019

Using the latest technology, new discoveries reveal the secrets of comets.

8Season 6

S6.E8 ∙ Hunt for Missing Black Holes

Tue, May 7, 2019

New discoveries may finally reveal how supermassive black holes are formed.

9Season 6

S6.E9 ∙ Wrath of the Sun

Tue, May 14, 2019

New discoveries reveal the threats that our Sun poses to life on Earth.

10Season 6

S6.E10 ∙ Asteroid Apocalypse

Tue, May 21, 2019

New discoveries reveal the apocalyptic consequences of an asteroid strike.

11Season 6

S6.E11 ∙ Mars's Alien Secrets

Tue, May 28, 2019

NASA missions to Mars might finally reveal if it's home to alien life.

1Season 8

S8.E1 ∙ 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.

2Season 8

S8.E2 ∙ Space's Great Wall

Wed, Apr 7, 2021

Astronomers discover a cosmic structure one billion light years long.

3Season 8

S8.E3 ∙ Curse of the White Holes

Wed, Apr 14, 2021

Einstein's theory of relativity predicts the existence of white holes.

4Season 8

S8.E4 ∙ Bermuda Triangle of Space

Wed, Apr 21, 2021

Scientists have detected a region of space they have yet to understand.

5Season 8

S8.E5 ∙ The Giant Ice Planets

Wed, Apr 28, 2021

Astronomers finally unlock the mysteries of Uranus and Neptune.

6Season 8

S8.E6 ∙ Secrets of the Asteroids

Wed, May 5, 2021

Examining asteroids in detail; revealing how space rocks can kick-start life on other planets.

7Season 8

S8.E7 ∙ Space Force Declassified

Wed, May 12, 2021

Discover the cutting-edge race to build the ultimate space weapon.

8Season 8

S8.E8 ∙ 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.

9Season 8

S8.E9 ∙ 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.