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Ultimate Crash Test: Countdown

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Season 52 Episodes

Operation Space Station: Science and Survival
S52 E20 Length 53:41 Premiere Date 11/12/25

Operation Space Station: High-Risk Build
S52 E19 Length 53:40 Premiere Date 11/05/25

Superfloods
S52 E18 Length 53:28 Premiere Date 10/29/25

Ancient Desert Death Trap
S52 E17 Length 53:21 Premiere Date 10/22/25

Human: Building Empires
S52 E16 Length 53:32 Premiere Date 10/15/25

Human: Into the Americas
S52 E15 Length 53:25 Premiere Date 10/08/25

Human: Neanderthal Encounters
S52 E14 Length 53:27 Premiere Date 10/01/25

Human: Journeys
S52 E13 Length 53:25 Premiere Date 09/24/25

Human: Origins
S52 E12 Length 53:32 Premiere Date 09/17/25

Ultimate Crash Test: Impact
S52 E11 Length 53:27 Premiere Date 05/14/25

Ultimate Crash Test: Countdown
S52 E10 Length 53:29 Premiere Date 05/07/25

Critical Condition: Health in Black America
S52 E9 Length 1:36:42 Premiere Date 04/30/25

Secrets of the Forest
S52 E8 Length 53:41 Premiere Date 04/16/25

Revolutionary War Weapons
S52 E7 Length 53:25 Premiere Date 04/09/25

Baltimore Bridge Collapse
S52 E6 Length 53:32 Premiere Date 02/26/25

Pompeii's Secret Underworld
S52 E5 Length 53:40 Premiere Date 02/19/25

Egypt's Tombs of Amun
S52 E4 Length 53:40 Premiere Date 02/12/25

Dino Birds
S52 E3 Length 53:35 Premiere Date 02/05/25

Extreme Airport Engineering
S52 E2 Length 53:40 Premiere Date 01/29/25

What Are UFOs?
S52 E1 Length 53:29 Premiere Date 01/22/25

These Are the World’s Oldest Mummies
Clip Length 02:49 Premiere Date 12/09/25

The Next Big Earthquake Could Sink Parts of the Pacific Northwest
Clip Length 05:08 Premiere Date 08/04/25

How Harvard Discovered It Has an Original Copy of the Magna Carta
Clip Length 03:13 Premiere Date 07/10/25

The Science of Scratch-Offs: What Your Brain Can’t Resist
Clip Length 06:39 Premiere Date 07/07/25

This Giant Telescope Will Reveal The Universe in Unbelievable Detail
Clip Length 05:59 Premiere Date 07/07/25

Ultimate Crash Test: Countdown Preview
Preview Length 00:30 Premiere Date 05/07/25

These Smart Glasses Know Who You Are, and Much More
Clip Length 04:18 Premiere Date 04/17/25

4 Ways the Universe Could End
Clip Length 05:07 Premiere Date 03/13/25

Do Aliens Exist? This Famous Equation Offers a Clue
Clip Length 05:04 Premiere Date 03/13/25

The Rocket-Less Future of Space Travel
Clip Length 05:17 Premiere Date 03/13/25

Building Blocks of Life Discovered on Distant Asteroid
Clip Length 06:03 Premiere Date 03/07/25

This Asteroid Might Make Impact With Earth in 2032
Clip Length 03:33 Premiere Date 02/20/25

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

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Black Hole Universe - S45 E2

Premiered On: 07/03/2019

Join astrophysicist Janna Levin on a mind-bending journey to the frontiers of black hole research. Discover how scientists may soon be able to "see" a black hole and are revealing new clues to the strangest and most extreme objects in the universe.

  • Sunday July 19, 2026 7:00 pm ET on KET2
  • Sunday July 19, 2026 6:00 pm CT on KET2
  • Tuesday July 21, 2026 1:00 am ET on KET2
  • Tuesday July 21, 2026 12:00 am CT on KET2

Chasing Pluto - S42 E13

Premiered On: 07/15/2015

The New Horizon's spacecraft will fly by and take the first detailed images of Pluto. It is the culmination of the spacecraft's nine-year, three-billion-mile journey.

  • Wednesday July 22, 2026 9:00 pm ET on KET
  • Wednesday July 22, 2026 8:00 pm CT on KET
  • Thursday July 23, 2026 5:00 pm ET on KET
  • Thursday July 23, 2026 4:00 pm CT on KET
  • Friday July 24, 2026 2:00 am ET on KET
  • Friday July 24, 2026 1:00 am CT on KET
  • Sunday July 26, 2026 7:00 pm ET on KET2
  • Sunday July 26, 2026 6:00 pm CT on KET2
  • Tuesday July 28, 2026 1:00 am ET on KET2
  • Tuesday July 28, 2026 12:00 am CT on KET2

Pluto and Beyond - S46 E1

Premiered On: 01/02/2019

Join the mission as the New Horizons spacecraft attempts to fly by NASA's most distant target yet. Since it explored Pluto in 2015, New Horizons is zooming toward Ultima Thule, an object four billion miles from Earth.

  • Wednesday July 29, 2026 9:00 pm ET on KET
  • Wednesday July 29, 2026 8:00 pm CT on KET
  • Thursday July 30, 2026 5:00 pm ET on KET
  • Thursday July 30, 2026 4:00 pm CT on KET
  • Friday July 31, 2026 2:00 am ET on KET
  • Friday July 31, 2026 1:00 am CT on KET
  • Sunday August 2, 2026 7:00 pm ET on KET2
  • Sunday August 2, 2026 6:00 pm CT on KET2
  • Tuesday August 4, 2026 1:00 am ET on KET2
  • Tuesday August 4, 2026 12:00 am CT on KET2

Return to the Moon - S53 E8

Follow the Artemis II engineers and crew on a perilous 10-day journey to orbit the Moon.

  • Wednesday August 5, 2026 9:00 pm ET on KET
  • Wednesday August 5, 2026 8:00 pm CT on KET
  • Thursday August 6, 2026 5:00 pm ET on KET
  • Thursday August 6, 2026 4:00 pm CT on KET
  • Friday August 7, 2026 2:00 am ET on KET
  • Friday August 7, 2026 1:00 am CT on KET
  • Thursday August 13, 2026 4:30 pm ET on KET
  • Thursday August 13, 2026 3:30 pm CT on KET
Jump to Upcoming Airdates

Recent

Black Hole Universe - S45 E2

  • Friday July 17, 2026 2:00 am ET on KET
  • Friday July 17, 2026 1:00 am CT on KET
  • Thursday July 16, 2026 5:00 pm ET on KET
  • Thursday July 16, 2026 4:00 pm CT on KET
  • Wednesday July 15, 2026 9:00 pm ET on KET
  • Wednesday July 15, 2026 8:00 pm CT on KET

Black Hole Apocalypse - S45 E1

  • Tuesday July 14, 2026 1:00 am ET on KET2
  • Tuesday July 14, 2026 12:00 am CT on KET2
  • Sunday July 12, 2026 7:00 pm ET on KET2
  • Sunday July 12, 2026 6:00 pm CT on KET2
  • Friday July 10, 2026 2:00 am ET on KET
  • Friday July 10, 2026 1:00 am CT on KET
  • Thursday July 9, 2026 5:00 pm ET on KET
  • Thursday July 9, 2026 4:00 pm CT on KET
  • Wednesday July 8, 2026 9:00 pm ET on KET
  • Wednesday July 8, 2026 8:00 pm CT on KET

Revolutionary War Weapons - S52 E7

  • Tuesday July 7, 2026 1:00 am ET on KET2
  • Tuesday July 7, 2026 12:00 am CT on KET2
  • Sunday July 5, 2026 7:00 pm ET on KET2
  • Sunday July 5, 2026 6:00 pm CT on KET2
  • Friday July 3, 2026 2:00 am ET on KET
  • Friday July 3, 2026 1:00 am CT on KET
  • Thursday July 2, 2026 5:00 pm ET on KET
  • Thursday July 2, 2026 4:00 pm CT on KET
  • Wednesday July 1, 2026 9:00 pm ET on KET
  • Wednesday July 1, 2026 8:00 pm CT on KET

Athens: Birth of Democracy - S53 E7

  • Friday July 3, 2026 1:00 am ET on KET
  • Friday July 3, 2026 12:00 am CT on KET
  • Thursday July 2, 2026 4:00 pm ET on KET
  • Thursday July 2, 2026 3:00 pm CT on KET
  • Wednesday July 1, 2026 8:00 pm ET on KET
  • Wednesday July 1, 2026 7:00 pm CT on KET

Ancient Desert Death Trap - S52 E17

  • Tuesday June 30, 2026 1:00 am ET on KET2
  • Tuesday June 30, 2026 12:00 am CT on KET2
  • Sunday June 28, 2026 7:00 pm ET on KET2
  • Sunday June 28, 2026 6:00 pm CT on KET2
  • Friday June 26, 2026 2:00 am ET on KET
  • Friday June 26, 2026 1:00 am CT on KET
  • Thursday June 25, 2026 5:00 pm ET on KET
  • Thursday June 25, 2026 4:00 pm CT on KET
  • Wednesday June 24, 2026 9:00 pm ET on KET
  • Wednesday June 24, 2026 8:00 pm CT on KET

Secrets of the Forest - S52 E8

  • Tuesday June 23, 2026 1:00 am ET on KET2
  • Tuesday June 23, 2026 12:00 am CT on KET2
  • Sunday June 21, 2026 7:00 pm ET on KET2
  • Sunday June 21, 2026 6:00 pm CT on KET2
  • Friday June 19, 2026 2:00 am ET on KET
  • Friday June 19, 2026 1:00 am CT on KET
  • Thursday June 18, 2026 5:00 pm ET on KET
  • Thursday June 18, 2026 4:00 pm CT on KET
  • Wednesday June 17, 2026 9:00 pm ET on KET
  • Wednesday June 17, 2026 8:00 pm CT on KET

Alaskan Dinosaurs - S48 E21

  • Tuesday June 16, 2026 1:00 am ET on KET2
  • Tuesday June 16, 2026 12:00 am CT on KET2
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