The BEST episodes of How the Universe Works season 6

Every episode of How the Universe Works season 6, ranked from best to worst by thousands of votes from fans of the show. The best episodes of How the Universe Works season 6!

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.

Last Updated: 4/23/2024Network: Science ChannelStatus: Continuing

7.84

68 votes

#1 - 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.

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7.71

66 votes

#2 - 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.

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7.66

76 votes

#3 - 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.

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7.64

75 votes

#4 - Dark History of the Solar System

Season 6 - Episode 3 - Aired 1/23/2018

Our solar system hides a dark and violent past, and new discoveries reveal that the earth and planets were formed from the destruction of strange alien worlds that came before us.

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7.59

58 votes

#5 - 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.

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7.57

90 votes

#6 - Are Black Holes Real?

Season 6 - Episode 1 - Aired 1/9/2018

New discoveries are challenging everything we know about black holes, and astronomers are beginning to question if they even exist. The latest science tries to explain how they work and what they look like, despite the fact we've never actually seen one.

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Uranus & Neptune: Rise of the Ice Giants

7.53

70 votes

#7 - Uranus & Neptune: Rise of the Ice Giants

Season 6 - Episode 5 - Aired 2/6/2018

Uranus and Neptune are mysterious, icy worlds at the edge of the solar system; new discoveries reveal that these strange planets may have helped start life on Earth.

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7.50

74 votes

#8 - 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.

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7.47

70 votes

#9 - Death of the Milky Way

Season 6 - Episode 4 - Aired 1/30/2018

The Milky Way is dying, and experts are investigating what's killing it.

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7.44

80 votes

#10 - Twin Suns: The Alien Mysteries

Season 6 - Episode 2 - Aired 1/16/2018

Planets that orbit two suns instead of one might be deadly hell worlds, but new discoveries reveal that sci-fi star systems with binary stars might be optimal places for alien life.

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