A users' guide to the cosmos, from the Big Bang to galaxies, stars, planets and moons: where did it all come from and how does it all fit together? A primer for anyone who has ever looked up at the night sky and wondered.
Where to watch
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HBO Max
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Philo
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Discovery+
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Science Channel
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Plex
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Plex Channel
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Amazon Video
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Apple TV Store
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Google Play Movies
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Fandango At Home
see all options Availability data: JustWatch
- Seasons
- 11
- Episodes aired
- 93
- Latest aired
- S11E05
- Total runtime
- 2d 19h
Timeline when each season aired
- Season 1 April 2010 – May 2010 8 episodes
- the show was away for 2 years and 1 month
- Season 2 July 2012 – August 2012 8 episodes
- the show was away for 1 year and 10 months
- Season 3 July 2014 – September 2014 9 episodes
- Season 4 July 2015 – September 2015 8 episodes
- Season 5 November 2016 – February 2017 9 episodes
- Season 6 January 2018 – March 2018 10 episodes
- Season 7 January 2019 – March 2019 10 episodes
- Season 8 January 2020 – February 2020 9 episodes
- Season 9 March 2021 – June 2021 11 episodes
- Season 10 March 2022 – April 2022 6 episodes
- Season 11 March 2023 – April 2023 5 episodes
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S05E01 Most Amazing Discoveries
November 22 · 42min find the promo
Show synopsis
From the furthest reaches of space to our own cosmic backyard, we count down the discoveries that changed everything we know about our universe.
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S05E02 Mystery of Planet 9
November 29 · 42min find the promo
Show synopsis
Scientists have discovered a mysterious ninth planet on the very edge of our solar system. Ten times the size of Earth, this strange world could have moons with extraterrestrial life.
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S05E03 Black Holes: The Secret Origin
December 6 · 42min find the promo
Show synopsis
Recent discoveries could explain how supermassive black holes grow so big, one of the universe's most mysterious questions. Neither dark matter nor cannibalism can fully explain these monsters, but the latest science might finally provide an answer.
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S05E04 Secret History of Pluto
January 3 · 42min find the promo
Show synopsis
The first close-up images of Pluto revealed unimaginable secrets of this mysterious frozen world. Now, scientists investigate if Pluto is home to a warm ocean of liquid water beneath its surface, and whether this underground ocean could harbor life.
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S05E05 Stars That Kill
January 10 · 42min find the promo
Show synopsis
The universe is home to real-life Death Stars that could destroy planet Earth. The latest science reveals the terrifying secrets of NASA's six deadliest: vampire stars, supernovas that can vaporize a planet, and unpredictable stars gone rogue.
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S05E06 The Universe's Deadliest
January 17 · 42min find the promo
Show synopsis
The universe is a dangerous place, and we explore the deadliest spots in the cosmos. Between earth and the edge of the universe, there are a million ways to die, and our crash test dummy is on a mission to reveal the worst.
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S05E07 Life and Death on the Red Planet
January 24 · 42min find the promo
Show synopsis
Life once existed on Mars, but a series of devastating mass extinctions have made present-day life nearly impossible. The latest science shows how Martian life keeps bouncing back as it transforms from a watery world like Earth into a desert planet.
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S05E08 The Dark Matter Enigma
January 31 · 42min find the promo
Show synopsis
Dark matter is the biggest mystery of the cosmos. Scientists know that it has been vital to our universe since its birth, and new discoveries reveal that it could create black holes, cause mass extinctions, and might even shape life on Earth itself.
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S05E09 Strangest Alien Worlds
February 7 · 42min find the promo
Show synopsis
Discoveries of new planets have revealed countless worlds much stranger than Earth. Some of these worlds don't have stars, others are made out of diamonds. Will we ever find a planet like Earth, or are these distant worlds stranger than fiction?