The WORST episodes of How the Universe Works
Every episode of How the Universe Works ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of How the Universe Works!
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.
#2 - Monsters of the Milky Way
Season 8 - Episode 8 - Aired 2/20/2020
The center of the Milky Way is home to strange and deadly phenomena that we don't yet understand, but using the latest science, experts are revealing how the supermassive black hole our galaxy's core shapes life on Earth.
Watch Now:Apple TV
#3 - Edge of the Universe
Season 8 - Episode 7 - Aired 2/13/2020
We don't yet know where the edge of the universe is or what happens there; but thanks to cutting-edge technology and new discoveries, experts might finally reveal the secrets of the phenomena that can be found in deepest reaches of the cosmos.
Watch Now:Apple TV
#4 - When NASA Met Jupiter
Season 8 - Episode 6 - Aired 2/6/2020
NASA's Juno spacecraft is part of a cutting-edge mission to explore the mysteries of Jupiter, and as this mighty probe is pummeled with deadly radiation, it gathers new data that could change everything we know about the solar system's biggest planet.
Watch Now:Apple TV
#5 - Secrets of Time Travel
Season 8 - Episode 5 - Aired 1/30/2020
Time travel might be more possible than we ever imagined, and today, cutting-edge technology and the latest research into black holes and wormholes is helping experts get steps closer to discovering how to travel through time.
Watch Now:Apple TV
#6 - Death of the Last Stars
Season 8 - Episode 4 - Aired 1/23/2020
Our universe's stars are dying off faster than new ones are born, and using the latest technology, experts investigate the secrets of the last stars of the cosmos and what this stellar apocalypse means for life on earth.
#7 - Hunt for Alien Evidence
Season 8 - Episode 3 - Aired 1/16/2020
The discovery of extraterrestrial life might face an impossible challenge: the physics of the universe itself; but using cutting-edge tech, experts might be on the verge of a groundbreaking find -- and the evidence could already be in hand.
#8 - NASA's Journey to Mars
Season 8 - Episode 2 - Aired 1/9/2020
NASA is on a mission to send humans to Mars within just 15 years, but to reach this next frontier of space exploration, experts must discover new technology and cutting-edge science that protects astronauts from the Red Planet's deadliest killers.
Watch Now:Apple TV
#9 - Asteroid Apocalypse: The New Threat
Season 8 - Episode 1 - Aired 1/2/2020
If a massive asteroid collides with earth, it could end life on our planet as we know it; new discoveries and cutting-edge tech reveal just how close we are to apocalypse and what it would take for the world's leading space agencies to stop it.
#10 - Cassini's Final Secrets
Season 7 - Episode 10 - Aired 3/12/2019
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.
#11 - Finding the New Earth
Season 7 - Episode 9 - Aired 3/5/2019
New discoveries have revealed thousands of exoplanets beyond our solar system. Some resemble earth enough that one could be a new home for humanity. Even with cutting-edge technology, finding the perfect one is the scientific challenge of the age.
#13 - Earth's Death Orbit
Season 8 - Episode 9 - Aired 2/27/2020
Earth's journey through the universe is a perilous one, and new discoveries reveal that our planet is heading toward a mysterious area of the cosmos that could eject us out of the Milky Way and into oblivion.
#14 - Did the Big Bang Really Happen?
Season 7 - Episode 6 - Aired 2/12/2019
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.
#17 - The Interstellar Mysteries
Season 7 - Episode 3 - Aired 1/22/2019
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.
Watch Now:Apple TV
#18 - When Supernovas Strike
Season 7 - Episode 2 - Aired 1/15/2019
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.
#19 - Nightmares of Neutron Stars
Season 7 - Episode 1 - Aired 1/8/2019
Neutron stars are strange and violent phenomena that defy the laws of physics, and new discoveries reveal that these bizarre nightmares are far more deadly than we ever thought, with the power to destroy planets and even other stars.
Watch Now:Apple TV
#20 - Mystery of Spacetime
Season 6 - Episode 10 - Aired 3/13/2018
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.
#21 - War on Asteroids
Season 6 - Episode 9 - Aired 3/6/2018
Scientists are using cutting-edge technology to stop an asteroid apocalypse, and for the first time, mankind is closer than ever to keeping Earth safe from these killer space rocks.
#22 - Strange Lives of Dwarf Planets
Season 6 - Episode 8 - Aired 2/27/2018
Our solar system is home to hundreds of strange, tiny worlds called dwarf planets, and new discoveries reveal the secrets of these mysterious places.
#23 - The Quasar Enigma
Season 6 - Episode 7 - Aired 2/20/2018
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.
#24 - Secret History of Mercury
Season 6 - Episode 6 - Aired 2/13/2018
Mercury is a deadly world, facing attacks from the sun, comets, and other planets, and even though it's the smallest planet in the solar system, it has a dangerous secret a dangerous secret that might one day threaten life on Earth.
Watch Now:Apple TV
#25 - Gravitational Waves Revealed
Season 9 - Episode 10 - Aired 5/26/2021
Gravitational waves are helping scientists explore the cosmos in revolutionary, new ways, and the discoveries they make are revealing the universe's greatest mysteries.