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Ultimate Mars Challenge Preview

Witness the exhilarating moments of Curiosity’s Mars landing — and the spectacular discoveries afterward.
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Preview Season 39 Episode 15 Length 00:30 Premiere: 07/24/12

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Specials

Season 39 Episodes

Hunting the Elements
S39 E6 Length 1:53:49 Premiere Date 04/03/12

Parachute Problems
Clip Length 02:54 Premiere Date 01/24/13

Space Kids
Clip Length 01:34 Premiere Date 11/14/12

Ultimate Mars Challenge Preview
Preview Length 00:30 Premiere Date 07/24/12

The 9/11 Memorial Mock-Up
Clip Length 01:54 Premiere Date 08/24/11

Solving an Engineering Problem
Clip Length 02:49 Premiere Date 08/24/11

Brian Greene Answers Your Questions
Clip Length 01:07 Premiere Date 08/02/11

Green Energy in China
Clip Length 05:09 Premiere Date 04/12/11

A Strict Carbon Diet
Clip Length 02:58 Premiere Date 04/12/11

A Mind for Music
Clip Length 04:05 Premiere Date 02/09/11

Modeling a Comet Airburst
Clip Length 03:20 Premiere Date 02/09/11

Six Questions with David Pogue
Clip Length 02:33 Premiere Date 01/04/11

Surviving an Elevator Fall
Clip Length 01:31 Premiere Date 08/23/10

Shabbat Elevator
Clip Length 02:42 Premiere Date 08/23/10

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TV Schedules

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Evolution: Brain Power - S53 E13

Learn how the human brain, and those of clever animals like the dolphin, evolved over time.

  • Tuesday October 20, 2026 1:00 am ET on KET2
  • Tuesday October 20, 2026 12:00 am CT on KET2

Evolution: Need to Feed - S53 E14

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

  • Wednesday October 21, 2026 9:00 pm ET on KET
  • Wednesday October 21, 2026 8:00 pm CT on KET
  • 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
  • Friday October 23, 2026 1:00 am CT on KET
  • Sunday October 25, 2026 7:00 pm ET on KET2
  • Sunday October 25, 2026 6:00 pm CT on KET2
  • Tuesday October 27, 2026 1:00 am ET on KET2
  • 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
  • Thursday October 29, 2026 5:00 pm ET on KET
  • Thursday October 29, 2026 4:00 pm CT on KET
  • Friday October 30, 2026 2:00 am ET on KET
  • Friday October 30, 2026 1:00 am CT on KET
  • Sunday November 1, 2026 7:00 pm ET on KET2
  • Sunday November 1, 2026 6:00 pm CT on KET2
  • Tuesday November 3, 2026 1:00 am ET on KET2
  • Tuesday November 3, 2026 12:00 am CT on KET2

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
  • Thursday November 5, 2026 5:00 pm ET on KET
  • Thursday November 5, 2026 4:00 pm CT on KET
  • Friday November 6, 2026 2:00 am ET on KET
  • Friday November 6, 2026 1:00 am CT on KET
  • Sunday November 8, 2026 7:00 pm ET on KET2
  • Sunday November 8, 2026 6:00 pm CT on KET2
  • Tuesday November 10, 2026 1:00 am ET on KET2
  • Tuesday November 10, 2026 12:00 am CT on KET2

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
  • Thursday November 12, 2026 4:00 pm CT on KET
  • Friday November 13, 2026 2:00 am ET on KET
  • Friday November 13, 2026 1:00 am CT on KET
  • Sunday November 15, 2026 7:00 pm ET on KET2
  • Sunday November 15, 2026 6:00 pm CT on KET2
  • Tuesday November 17, 2026 1:00 am ET on KET2
  • Tuesday November 17, 2026 12:00 am CT on KET2

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
Jump to Upcoming Airdates

Recent

Evolution: Brain Power - S53 E13

  • Sunday October 18, 2026 7:00 pm ET on KET2
  • Sunday October 18, 2026 6:00 pm CT on KET2
  • Friday October 16, 2026 2:00 am ET on KET
  • Friday October 16, 2026 1:00 am CT on KET
  • Thursday October 15, 2026 5:00 pm ET on KET
  • Thursday October 15, 2026 4:00 pm CT on KET
  • Wednesday October 14, 2026 9:00 pm ET on KET
  • Wednesday October 14, 2026 8:00 pm CT on KET

Space Wars - S53 E12

  • Tuesday October 13, 2026 1:00 am ET on KET2
  • Tuesday October 13, 2026 12:00 am CT on KET2
  • Sunday October 11, 2026 7:00 pm ET on KET2
  • Sunday October 11, 2026 6:00 pm CT on KET2
  • Friday October 9, 2026 2:00 am ET on KET
  • Friday October 9, 2026 1:00 am CT on KET
  • Thursday October 8, 2026 5:00 pm ET on KET
  • Thursday October 8, 2026 4:00 pm CT on KET
  • Wednesday October 7, 2026 9:00 pm ET on KET
  • Wednesday October 7, 2026 8:00 pm CT on KET

Stone Age Masterpiece - S53 E11

  • Tuesday October 6, 2026 1:00 am ET on KET2
  • Tuesday October 6, 2026 12:00 am CT on KET2
  • Sunday October 4, 2026 7:00 pm ET on KET2
  • Sunday October 4, 2026 6:00 pm CT on KET2
  • Friday October 2, 2026 2:00 am ET on KET
  • Friday October 2, 2026 1:00 am CT on KET
  • Thursday October 1, 2026 5:00 pm ET on KET
  • Thursday October 1, 2026 4:00 pm CT on KET
  • Wednesday September 30, 2026 9:00 pm ET on KET
  • Wednesday September 30, 2026 8:00 pm CT on KET

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
  • Friday September 25, 2026 2:00 am ET on KET
  • Friday September 25, 2026 1:00 am CT on KET
  • Thursday September 24, 2026 5:00 pm ET on KET
  • Thursday September 24, 2026 4:00 pm CT on KET
  • Wednesday September 23, 2026 9:00 pm ET on KET
  • Wednesday September 23, 2026 8:00 pm CT on KET

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
  • Friday September 18, 2026 2:00 am ET on KET
  • Friday September 18, 2026 1:00 am CT on KET
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