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Einstein’s Thought Experiment

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Clip Season 42 Episode 23 Length 01:49 Premiere: 11/25/15

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Season 42 Episodes

Inside Einstein's Mind
S42 E23 Length 53:07 Premiere Date 11/25/15

Making North America: Origins
S42 E20 Length 53:35 Premiere Date 11/04/15

Einstein’s Thought Experiment
Clip Length 01:49 Premiere Date 11/25/15

Gravity's Effect on Spacetime
Clip Length 01:48 Premiere Date 11/25/15

What is Spacetime?
Clip Length 02:06 Premiere Date 11/25/15

How Einstein Changed the Way We Understand Gravity
Clip Length 05:36 Premiere Date 11/25/15

Einstein's Thought Experiment That Transformed Physics
Clip Length 02:10 Premiere Date 11/25/15

Inside Einstein's Mind Preview
Preview Length 00:30 Premiere Date 11/09/15

Sea Level Rise: When 1 in = 2 ft
Clip Length 02:42 Premiere Date 10/20/15

Digital Domain of Warfare
Clip Length 01:56 Premiere Date 10/13/15

CyberWar Threat Preview
Preview Length 00:30 Premiere Date 10/07/15

The Power of the Flood Myth
Clip Length 03:32 Premiere Date 09/29/15

Space Pics That Amaze Scientists
Clip Length 02:52 Premiere Date 08/24/15

Ghosts of Subatomic Particles
Clip Length 01:42 Premiere Date 03/17/15

Invisible Universe Revealed Preview
Preview Length 00:30 Premiere Date 03/03/15

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Evolution: Need to Feed - S53 E14

The surprising story of how our planet's diverse creatures became the furious feeding machines they are today.

  • Thursday October 22, 2026 5:00 pm ET on KET
  • Thursday October 22, 2026 4:00 pm CT on KET
  • Friday October 23, 2026 2:00 am ET on KET
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  • Tuesday October 27, 2026 12:00 am CT on KET2

Evolution: Body Builders - S53 E15

Discover the process behind the incredible variety of animal shapes and sizes.

  • Wednesday October 28, 2026 9:00 pm ET on KET
  • Wednesday October 28, 2026 8:00 pm CT on KET
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  • Tuesday November 3, 2026 1:00 am ET on KET2
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Evolution: The Mating Game - S53 E16

Discover how the rise of sexual reproduction fuels diversity, pushing life to specialize and shaping everything from tiny single-celled organisms to towering ostriches.

  • Wednesday November 4, 2026 9:00 pm ET on KET
  • Wednesday November 4, 2026 8:00 pm CT on KET
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Evolution: On the Run - S53 E17

An evolutionary ride from early aquatic ancestors to highly optimized runners like the horse.

  • Wednesday November 11, 2026 9:00 pm ET on KET
  • Wednesday November 11, 2026 8:00 pm CT on KET
  • Thursday November 12, 2026 5:00 pm ET on KET
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  • Sunday November 15, 2026 7:00 pm ET on KET2
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  • Tuesday November 17, 2026 1:00 am ET on KET2
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NOVA Universe Revealed: Age of Stars - S48 E15

Premiered On: 10/27/2021

The Hubble Space Telescope and a heat-resistant solar probe reveal new clues about the sun's 5-billion-year history.

  • Monday November 16, 2026 5:00 pm ET on KET
  • Monday November 16, 2026 4:00 pm CT on KET

NOVA Universe Revealed: Milky Way - S48 E16

Premiered On: 11/03/2021

Explore the history of the Milky Way, including what shaped this spiral of stars, gas and dust and what its destiny will be.

  • Tuesday November 17, 2026 5:00 pm ET on KET
  • Tuesday November 17, 2026 4:00 pm CT on KET

NOVA Universe Revealed: Alien Worlds - S48 E17

Premiered On: 11/10/2021

New science and discoveries made possible by ultra-sensitive telescopes and detective work transform alien planet-hunting from science fiction into fact.

  • Wednesday November 18, 2026 5:00 pm ET on KET
  • Wednesday November 18, 2026 4:00 pm CT on KET

NOVA Universe Revealed: Black Holes - S48 E18

Premiered On: 11/17/2021

A new generation of high-powered telescopes brings black holes to light. Animation reveals what happens when objects stray too close to a black hole's point of no return.

  • Thursday November 19, 2026 5:00 pm ET on KET
  • Thursday November 19, 2026 4:00 pm CT on KET

NOVA Universe Revealed: Big Bang - S48 E19

Premiered On: 11/24/2021

Nova probes the mystery of the Big Bang with stunning animation based on space telescope images.

  • Friday November 20, 2026 5:00 pm ET on KET
  • Friday November 20, 2026 4:00 pm CT on KET

Secrets in Your Data - S51 E7

Alok Patel takes a look at what happens to the personal data shared on social media and efforts to maximize benefits without compromising personal privacy.

  • Sunday November 22, 2026 7:00 pm ET on KET2
  • Sunday November 22, 2026 6:00 pm CT on KET2
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Evolution: Need to Feed - S53 E14

  • Wednesday October 21, 2026 9:00 pm ET on KET
  • Wednesday October 21, 2026 8:00 pm CT on KET

Evolution: Brain Power - S53 E13

  • Tuesday October 20, 2026 1:00 am ET on KET2
  • Tuesday October 20, 2026 12:00 am CT on KET2
  • Sunday October 18, 2026 7:00 pm ET on KET2
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  • Wednesday October 14, 2026 9:00 pm ET on KET
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Space Wars - S53 E12

  • Tuesday October 13, 2026 1:00 am ET on KET2
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Stone Age Masterpiece - S53 E11

  • Tuesday October 6, 2026 1:00 am ET on KET2
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  • Sunday October 4, 2026 7:00 pm ET on KET2
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Knowledge Keepers - S53 E10

  • Tuesday September 29, 2026 1:00 am ET on KET2
  • Tuesday September 29, 2026 12:00 am CT on KET2
  • Sunday September 27, 2026 7:00 pm ET on KET2
  • Sunday September 27, 2026 6:00 pm CT on KET2
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The Battle to Breathe - S53 E9

  • Tuesday September 22, 2026 1:00 am ET on KET2
  • Tuesday September 22, 2026 12:00 am CT on KET2
  • Sunday September 20, 2026 7:00 pm ET on KET2
  • Sunday September 20, 2026 6:00 pm CT on KET2
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