
About this season
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 far beyond anyone's imagination. "Space's Deepest Secrets" shares stories of the men and women who pushed their ingenuity and curiosity to uncover some of the most groundbreaking findings in the history of space exploration. Hourlong episodes cover NASA's New Horizons mission to Pluto, the Hubble Telescope, the twin Voyager explorations, and other past, current and future missions and projects.
Episodes (14)

1. The Universe's Greatest Hits
Aired 26 April 2016 • 42 min
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.

2. Hunt for Dark Energy
Aired 3 May 2016 • 42 min
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.

3. Death of the Solar System
Aired 10 May 2016 • 42 min
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.

4. Alien Oceans
Aired 17 May 2016 • 42 min
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.

5. Secret History of the Voyager Mission
10.0Aired 24 May 2016 • 42 min
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.

6. The Plot Against Gravity
Aired 31 May 2016 • 42 min
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.

7. Attack of the Space Junk
Aired 7 June 2016 • 42 min
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.

8. Quest for the First Star
Aired 14 June 2016 • 42 min
The search for the first stars of the universe.

9. When the Sun Attacks
Aired 21 June 2016 • 42 min
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.

10. Inside NASA's Mission to Mars
Aired 28 June 2016 • 42 min
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.

11. Secret History of the Solar System
Aired 6 August 2016 • 42 min
The discovery of exoplanets pushes scientists to reexamine the origin of the Solar System; the evidence infers a tale of unrestrained collisions and chaos.

12. The Truth Behind Parallel Universes
Aired 13 August 2016 • 42 min
Scientists are working to determine if parallel universes exist.

13. Dark Secret of the Universe
Aired 20 August 2016 • 42 min
Scientists are finally on the hunt to finally crack the dark secrets of the atoms that make up the universe.

14. Inside a Monster Black Hole
Aired 27 August 2016 • 42 min
Inside the supermassive black hole that sits in the middle of our galaxy.