Browse the full Discovery History TV guide for Tuesday, 20 October 2026. 26 programmes listed , including 7 tonight. UK listings updated daily — scroll down to tonight's highlights or use the day tabs above to browse the weekly schedule.
Early Morning
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00:00 1h
How the Universe Works
S10 · E1 · Secrets of the Cosmic WebInvestigating an invisible scaffold of dark matter known as the Cosmic WebNew research is beginning to reveal an invisible scaffold of dark matter known as the Cosmic Web, an intergalactic network that transformed the universe -
01:00 1h
Mysteries at the Museum
S17 · E12 · Winter War and moreDon investigates an ingenious trick that helped win a war.Don Wildman investigates an ingenious trick that helped win a war, a terrifying trek through Antarctica and a miraculous invention that the world loved. -
02:00 1h
Mysteries at the Museum
S17 · E13 · Battle on ice and moreDon Wildman investigates the strategy of a medieval generalDon Wildman investigates the strategy of a medieval general, a bizarre creature from the deep and searches for the fate of a lost expedition -
03:00 1h
Expedition X
S3 · E1 · Terror in AppalachiaInvestigating missing hiker reports in the Great Smoky MountainsPhil and Jess venture into the Great Smoky Mountains to investigate missing hiker reports and sightings of grotesque human-like creatures -
04:00 1h
Expedition Unknown
S2 · E18 · Lost Spanish Fortune, Found!Josh Gates travels to the coast of Florida and Cuba in search of treasureJosh Gates travels to the coast of Florida and Cuba in search of sunken treasure from a fleet of Spanish ships that sunk in 1715 -
05:00 30m
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05:30 30m
Morning
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06:00 1h
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07:00 1h
Attack and Capture: The Story of U-Boat 505
The German submarine's capture by the US NavyThe story of the only German submarine captured by the US Navy during the Second World War, examining the battle and its aftermath using archive footage and eyewitness accounts -
08:00 1h
Combat Dealers
S3 · E5 · Hidden Heroes of D-DayBruce Crompton uncovers plans for the D-Day invasionBruce Crompton uncovers plans for the D-Day invasion, experiences a bumpy landing in a Dakota aeroplane, and in France his passion hits new heights with a parachute jump -
09:00 1h
Lost Mines: Restored
S1 · E3 · Paydirt or BustAlex and Kevin renovate a mine's machine shopAlex and Kevin renovate a mine's machine shop so the mine can begin generating income. The guys negotiate a deal that could be their biggest payoff yet -
10:00 1h
Lost Mines: Restored
S1 · E4 · Poor Man's MineA third-generation miner has big dreams of re-opening his father's silver mineA third-generation miner has big dreams of re-opening his father's silver mine, but unsafe conditions means that he requires backup -
11:00 1h
Salvage Hunters
S12 · E8 · HollandDrew Pritchard scours Holland for scrap itemsDrew Pritchard heads to Holland where, thanks to its thriving antiques markets, he can find the kind of unique pieces he's renowned for - including his dream car, a vintage Bugatti
Daytime
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12:00 1h
Salvage Hunters
S12 · E9Drew Pritchard unearths a steel corpus of Christ on the crossDrew Pritchard unearths a steel corpus of Christ on the cross, and spots a divine early 19th-century gothic pew. Later, he finds a set of 1950s industrial pendant lamps -
13:00 1h
How the Universe Works
S7 · E4 · Secret World of NebulasNew discoveries reveal the secrets of nebulasNew discoveries reveal the secrets of nebulas, which are strange structures of cosmic gas and dust where stars are born and die in space -
14:00 1h
Nasa's Unexplained Files
S4 · E6 · Did Aliens Nuke Mars?An investigation into a strange discovery made by the Mars Curiosity roverAn investigation into a strange discovery made by the Mars Curiosity rover, which could suggest an alien nuclear war took place there more than 300 million years ago -
15:00 1h
Expedition Unknown
S3 · E1 · Plummer's GoldJosh Gates searches for the lost fortune of a notorious Montana sheriffJosh Gates sets off for gold rush country to search for the lost fortune of a Montana sheriff, exploring hidden cave systems and opening a mine sealed for over a century -
16:00 1h
Expedition X
S3 · E2 · The Van Meter MonsterHorrified locals in Iowa report sightings of a giant winged creatureHorrified locals in Iowa report sightings of a giant winged creature - the same mysterious beast that terrorised the town of Van Meter 100 years ago -
17:00 1h
Mysteries at the Museum
S18 · E1 · Ground Zero Flag and moreDon Wildman investigates the story behind an iconic September 11th photo.Don Wildman investigates the story behind an iconic September 11th photo, a NASA experiment that turned deadly and a Naval codebreaker.
Tonight's Highlights
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18:00 1h
Mysteries at the Museum
S18 · E2 · Terra Australis and moreDon Wildman examines an unlikely alliance between the military and a mob bossDon Wildman examines an unlikely alliance between the military and a mob boss, a death-defying voyage on the high seas and a high-flying heroine -
19:00 1h
How the Universe Works
S10 · E2 · Curse of the Cosmic RaysThe risk to manned space exploration of cosmic raysCosmic rays that damage human DNA are a serious risk in manned space exploration. Can physicists find the source of the rays and help reduce the danger? -
20:00 1h
Attack and Capture: The Story of U-Boat 505
The German submarine's capture by the US NavyThe story of the only German submarine captured by the US Navy during the Second World War, examining the battle and its aftermath using archive footage and eyewitness accounts -
21:00 1h
Paranormal Declassified
S1 · E4 · Alien Cover-UpPaul Beban searches for evidence of extra-terrestrialsPaul Beban searches for evidence of extra-terrestrials. He unearths long-buried files that could lead to an alien cover-up all the way to the White House -
22:00 30m
How Do They Do It?
S10 · E14 · Marble/Mah-jong/Escape SlidesA look at how marble is producedA look at how marble is produced, the building of escape slides and how mah-jong pieces are made -
22:30 30m
How Do They Do It?
S10 · E15 · Kamaz Trucks/Hair Care/Canton TowerThe manufacture of hair productsThe manufacture of Kamaz trucks and hair-care products and the construction of Chinese landmark building the Canton Tower -
23:00 1h
Combat Dealers
S3 · E5 · Hidden Heroes of D-DayBruce Crompton uncovers plans for the D-Day invasionBruce Crompton uncovers plans for the D-Day invasion, experiences a bumpy landing in a Dakota aeroplane, and in France his passion hits new heights with a parachute jump