How the Universe Works

10 Best Episodes of How the Universe Works - Season 5

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.

Written by Sophie and last updated on feb 12, 2023.

PS: The following content contains spoilers!

PPS: I will admit that parts of this page was written with the help of AI - it makes my work so much easier to not start from a blank page!

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How the Universe Works - S5E3

#9 - Black Holes: The Secret Origin (Season 5 - Episode 3)

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.

The episode was rated 7.37 from 83 votes.

How the Universe Works - S5E8

#8 - The Dark Matter Enigma (Season 5 - Episode 8)

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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.

The episode was rated 7.49 from 75 votes.

How the Universe Works - S5E4

#7 - Secret History of Pluto (Season 5 - Episode 4)

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.

The episode was rated 7.57 from 75 votes.

How the Universe Works - S5E6

#6 - The Universe's Deadliest (Season 5 - Episode 6)

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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.

The episode was rated 7.59 from 76 votes.

How the Universe Works - S5E9

#5 - Strangest Alien Worlds (Season 5 - Episode 9)

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?

The episode was rated 7.59 from 81 votes.

How the Universe Works - S5E2

#4 - Mystery of Planet 9 (Season 5 - Episode 2)

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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.

The episode was rated 7.64 from 126 votes.

How the Universe Works - S5E1

#3 - Most Amazing Discoveries (Season 5 - Episode 1)

From the furthest reaches of space to our own cosmic backyard, we count down the discoveries that changed everything we know about our universe.

The episode was rated 7.74 from 141 votes.

How the Universe Works - S5E5

#2 - Stars That Kill (Season 5 - Episode 5)

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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.

The episode was rated 7.81 from 91 votes.

How the Universe Works - S5E7

#1 - Life and Death on the Red Planet (Season 5 - Episode 7)

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.

The episode was rated 7.86 from 77 votes.

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