The BEST Episodes of How the Universe Works
Every episode ever - ranked by fan votes!
Last Updated: Dec 25, 2019
Network: Science Channel
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.
#1 - The Interstellar Mysteries
Season 7 - Episode 3 - Aired Jan 22, 2019
Interstellar space is the space between the universe's stars and new discoveries reveal that it's not empty and unremarkable as previously thought, but filled with weird objects and strange phenomena that might hold the darkest secrets of our cosmos.
8.46 
#2 - Secret History of Pluto
Season 5 - Episode 4 - Aired Jan 3, 2017
Pluto is the subject, with an investigation into whether the planet has an underground ocean. 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 harbour life.
8.43 
#3 - The First Oceans
Season 4 - Episode 7 - Aired Aug 25, 2015
For years, scientists suspected that the oceans came from molecules delivered to Earth from distant stars by asteroids, but a new discovery suggests that their true origins may be more exotic.
8.35 
#4 - Galaxies
Season 1 - Episode 3 - Aired May 10, 2010
Galaxies, home to stars, planets and us, come in all shapes and sizes. Witnesses the evolution of galaxies; from clouds of cold gas floating in the voids of space 13 billion years ago, to the magnificent spirals that fill our night sky.
8.25 #5 - Forces of Mass Construction
Season 4 - Episode 8 - Aired Sep 1, 2015
Scientists attempt to understand how this strange force of magnetism works.
8.25 
#6 - Secret History of the Moon
Season 4 - Episode 6 - Aired Aug 18, 2015
Our Moon is stranger than you think, and we reveal its incredible secrets. Can we thank the Moon for life on Earth? What explains the mysterious tunnels beneath its surface? Is a lunar base the key to humanity's future in space?
8.23 
#7 - When Supernovas Strike
Season 7 - Episode 2 - Aired Jan 15, 2019
Supernovas are the violent death of giant stars, and new discoveries reveal that these cataclysmic events create the elements that are essential to all life in the universe.
8.23 
#8 - Did the Big Bang Really Happen?
Season 7 - Episode 6 - Aired Feb 12, 2019
New discoveries are causing astronomers to question if the Big Bang really happened, and using the latest science, they investigate if it wasn't just the start of our universe but many mysterious multiverses.
8.23 
#9 - Birth of the Earth
Season 2 - Episode 8 - Aired Aug 29, 2012
The Earth was formed by a series of cataclysms without which we would not exist. Could the same events have created other earth-like planets elsewhere in the Universe inhabited by creatures like us?
8.22 
#10 - Battle of the Dark Universe
Season 7 - Episode 7 - Aired Feb 19, 2019
Dark matter and dark energy are locked in an epic battle for control of the cosmos, and the winner will determine the fate of the universe. New discoveries might reveal which force will emerge victorious.
8.21 
#11 - Hunt for Alien Life
Season 7 - Episode 8 - Aired Feb 26, 2019
The latest discoveries suggest life beyond this planet; scientists investigate if earth's life began elsewhere in the universe, and whether humans need to evolve to know for sure.
8.16 
#12 - Dawn of Life
Season 4 - Episode 5 - Aired Aug 11, 2015
Discovering how life on Earth came to be; the possibility that life on Earth come from another planet.
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#13 - Big Bang
Season 1 - Episode 1 - Aired Apr 25, 2010
This is the greatest story ever told, the creation of everything us. The programme investigates how the Universe came into existence out of nothing, and how it grew from a miniscule point, smaller than an atomic particle, to the vast cosmos we see today.
8.14 
#14 - Stars That Kill
Season 5 - Episode 5 - Aired Jan 10, 2017
Exploring the real-life Death Stars in the cosmos that could snuff out Earth without much effort; the science of the destructive power behind six of the deadliest star; vampire stars; supernovas; rogue stars.
8.11 
#15 - Secret World of Nebulas
Season 7 - Episode 5 - Aired Feb 5, 2019
Nebulas are the strange structures of cosmic gas and dust where stars are born and die, and new discoveries reveal the secrets of these mysterious places.
8.11 
#16 - Mystery of Spacetime
Season 6 - Episode 10 - Aired Mar 13, 2018
Spacetime is the secret structure that controls the universe, and this strange four-dimensional substance controls time, light, and energy. It will also determine how the universe will end.
8.07 
#17 - Cassini's Final Secrets
Season 7 - Episode 10 - Aired Mar 12, 2019
For twenty years, NASA's Cassini spacecraft revealed the strange secrets of Saturn until it vaporized in its atmosphere in a blaze of glory. But today its legacy lives on, as fresh data from the probe helps scientists make brand-new discoveries.
8.07 
#18 - Asteroids - Worlds that Never Were
Season 2 - Episode 7 - Aired Aug 22, 2012
From icy worlds with more fresh water than Earth to flying mountains of pure metal, asteroids shaped our past and promise much for the future. Could these enigmatic space rocks hold the key to how life in the Universe arises and is extinguished?
8.05 
#19 - Monster Black Hole
Season 4 - Episode 3 - Aired Jul 28, 2015
A look inside the supermassive black hole in the center of the Milky Way to discover terrifying secrets about parallel universes, wormholes, and space-time.
8.05 
#20 - Edge of the Solar System
Season 4 - Episode 4 - Aired Aug 4, 2015
Huge magnetic bubbles millions of miles wide; strange invisible matter, and a death star tearing through bands of icy comets, flinging them into violent orbits.
8.03 
#21 - How Black Holes Made Us
Season 7 - Episode 4 - Aired Jan 29, 2019
Black holes are not the violent monsters people think they are, and new discoveries reveal that they might have been essential to creating stars, giving light, and building the universe itself.
8.03 
#22 - Solar Systems
Season 1 - Episode 7 - Aired May 24, 2010
Is our solar system unique? Since the first discovery of a planet orbiting another star, some 280 alien solar systems have been identified. It's only by looking at solar systems far beyond our own, that we can understand how remarkable our universe is.
8.03 
#23 - Black Holes
Season 1 - Episode 2 - Aired May 2, 2010
Black Holes,the most powerful destroyers in the Universe, the most mysterious phenomena in the heavens. For years they were only speculation, now modern astronomy is proving them frighteningly real and showing that they may well shape everything we see.
8.01 
#24 - Life & Death on the Red Planet
Season 5 - Episode 7 - Aired Jan 24, 2017
The evolution of life on Mars before a series of cataclysmic events transformed the planet from a watery world to a hostile one; scientists believe life will find a way to continue despite the setbacks.
8.00 
#25 - The Quasar Enigma
Season 6 - Episode 7 - Aired Feb 20, 2018
Quasars are the brightest and most powerful objects in our universe, and though they have shaped the cosmos, they might ultimately destroy everything that exists.
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