Browse the full Discovery History TV guide for Tuesday, 21 July 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
00:00
1h
New discoveries surrounding the power of neutron stars
01:00
1h
Don Wildman examines an accident that nearly caused a nuclear catastrophe
02:00
1h
Don Wildman investigates a rocket-powered wheel that took on the Nazis
03:00
1h
Phil and Jess travel to Monterrey, Mexico, where locals encounter black magic
04:00
1h
Josh heads to the Wild West in search of hidden loot
05:00
30m
Home shopping
05:30
30m
Home shopping
Morning
06:00
1h
Home shopping
07:00
1h
Josh Gates travels to the remote Easter Island
08:00
1h
Bruce Crompton buys a rare Sherman tank
09:00
1h
The Dendera Temple is one of Egypt's best-preserved temples
10:00
1h
Investigators use CGI to reveal where the tomb of Alexander the Great may lie
11:00
1h
Drew Pritchard bargains hard in Frome, Somerset, and in Dumfriesshire
Daytime
12:00
1h
Drew Pritchard uncovers a wartime flag with a medical history.
13:00
1h
New discoveries reveal the truth behind supernovas
14:00
1h
A UFO pursues a woman
15:00
1h
Josh jets to Poland to open a secret Nazi tunnel in a dormant volcano
16:00
1h
A murderous monster is said to lurk in the swamplands near New Orleans
17:00
1h
Don Wildman explores the story of a dramatic crime
Tonight's Highlights
18:00
1h
Don examines a mission that provoked a military standoff
19:00
1h
Gravitational waves, which are helping scientists explore the cosmos in new ways
20:00
1h
Josh Gates travels to the remote Easter Island
21:00
1h
The truth behind a cave wall in Nottinghamshire
22:00
30m
Exploring the construction of large tunnels in one of the world's biggest cities
22:30
30m
Baklava, ukuleles and the world's fastest ferry
23:00
1h
Bruce Crompton buys a rare Sherman tank