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The Milky Way and Andromeda Galaxies will Someday Collide

Astronomers estimate that in about 4.5 billion years, the Milky Way and Andromeda galaxies will collide. Here's how it'll happen.
Clip Season 48 Episode 16 Length 02:56 Premiere: 11/03/21

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Season 48 Episodes

Ancient Maya Metropolis

S48 E22 Length 53:31 Premiere Date 01/26/22

Alaskan Dinosaurs

S48 E21 Length 53:21 Premiere Date 01/19/22

Butterfly Blueprints

S48 E20 Length 53:20 Premiere Date 01/12/22

NOVA Universe Revealed: Big Bang

S48 E19 Length 53:16 Premiere Date 11/24/21

NOVA Universe Revealed: Black Holes

S48 E18 Length 53:16 Premiere Date 11/17/21

NOVA Universe Revealed: Alien Worlds

S48 E17 Length 53:17 Premiere Date 11/10/21

NOVA Universe Revealed: Milky Way

S48 E16 Length 53:17 Premiere Date 11/03/21

NOVA Universe Revealed: Age of Stars

S48 E15 Length 53:17 Premiere Date 10/27/21

Edible Insects

S48 E14 Length 53:28 Premiere Date 10/20/21

Arctic Drift

S48 E13 Length 53:31 Premiere Date 10/13/21

Particles Unknown

S48 E12 Length 53:28 Premiere Date 10/06/21

The Cannabis Question

S48 E11 Length 53:36 Premiere Date 09/29/21

Bat Superpowers

S48 E10 Length 53:13 Premiere Date 09/15/21

Ship That Changed the World

S48 E9 Length 53:12 Premiere Date 06/02/21

High-Risk High-Rise

S48 E8 Length 52:36 Premiere Date 01/05/22

Great Electric Airplane Race

S48 E7 Length 53:07 Premiere Date 05/26/21

Looking for Life on Mars

S48 E2 Length 53:46 Premiere Date 02/24/21

NOVA Universe Revealed: Milky Way Preview

Preview Length 00:30 Premiere Date 11/03/21

Gaze at Galaxies with NASA's Hubble Space Telescope

Clip Length 02:44 Premiere Date 11/03/21

The Milky Way and Andromeda Galaxies will Someday Collide

Clip Length 02:56 Premiere Date 11/03/21

GameStop, Reddit, and the Rise of Risky Trades

Clip Length 08:35 Premiere Date 04/27/21

Texas' Power Grid Trouble is Far From Over

Clip Length 08:23 Premiere Date 03/20/21

The Big Lie about Monarch Butterflies

Clip Length 09:25 Premiere Date 03/15/21

Origins of Misinformation and How it Spreads

Clip Length 05:47 Premiere Date 03/15/21

How Mask-Wearing Misinformation Became a Reality

Clip Length 05:38 Premiere Date 02/23/21

Dream Hacking: Decisions, Addictions, and Sleep

Clip Length 14:34 Premiere Date 02/18/21

Why Misinformation Matters

Clip Length 02:41 Premiere Date 02/11/21

Lingering Symptoms from COVID-19 are “Unprecedented”

Clip Length 05:05 Premiere Date 02/04/21

New COVID-19 Variants Spread More Easily

Clip Length 07:15 Premiere Date 02/04/21

This University Monitors COVID-19 Through Saliva Testing

Clip Length 06:53 Premiere Date 01/15/21

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Decoding the Universe: Cosmos - S51 E8

Trace groundbreaking discoveries in space research and exploration and follow the teams trying to solve two mysteries in cosmology - dark matter and dark energy.

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Why Ships Crash - S49 E9

Nova investigates the 2021 crash of the Ever Given container ship in the Suez Canal and its impact.

  • Wednesday May 29, 2024 9:00 pm ET on KET
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Bat Superpowers - S48 E10

Premiered On: 09/15/2021

From caves in Thailand and Texas to labs around the globe, scientists are decoding the superpowers of the bat. Could the source of the deadliest viruses hold the secret to a healthier and longer life?

  • Thursday June 6, 2024 5:00 pm ET on KET
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Saving the Right Whale - S50 E7

The North Atlantic right whale is on the brink of extinction. But a handful of specialists are determined to help save it as they discover new secrets about the lives of these giants of the sea.

  • Wednesday June 12, 2024 9:00 pm ET on KET
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Alaskan Dinosaurs - S48 E21

Wielding chainsaws to extract fossils frozen into the permafrost and flying drones to map thousands of footprints, intrepid paleontologists discover that dinosaurs thrived in the cold and dark of the Arctic Circle.

  • Wednesday June 19, 2024 10:00 pm ET on KET
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Decoding the Universe: Cosmos - S51 E8

  • Wednesday May 22, 2024 9:00 pm ET on KET
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Secrets in Your Data - S51 E7

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Why Bridges Collapse - S46 E18

  • Wednesday May 15, 2024 8:00 am ET on KETWORLD
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Making North America: Human - S42 E22

  • Wednesday May 8, 2024 8:00 am ET on KETWORLD
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Making North America: Life - S42 E21

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Weathering the Future - S50 E5

  • Monday April 22, 2024 4:00 pm ET on KETWORLD
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Making North America: Origins - S42 E20

  • Wednesday April 24, 2024 8:00 am ET on KETWORLD
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