S7 episodes 1-19 streaming until 4 Jan 2026
What On Earth?
Watch all available episodes of What On Earth?
Mysterious satellite images reveal China's hidden terror camps and provide access to America's top secret apocalypse pyramid.
Episode 2Satellites capture unusual images including markings in the desert, while a strange symbol could be a portal into a lost South American civilisation.
Episode 3Satellites capture startling images of a structure in North Korea that may be sinister evidence of a looming nuclear threat.
Episode 4Are unusual patterns in an English field really an alien message? And why is there a secret military facility in the Nevada desert?
Episode 5Discover images of an Iceland cave that could hold alien secrets, military structures in the Utah desert and a bloody stain in the sands of Saudi Arabia.
Episode 6Discover a trail of moving objects in the ice of Antarctica, evidence of one of Joseph Stalin's most insane schemes and a code in the Sonoran Desert.
Episode 7A strange structure discovered in the Gobi Desert could reveal the whereabouts of lost treasure - changing everything we know about Genghis Khan.
Episode 8When a strange plane is discovered near the sight of the Roswell UFO incident, experts wonder if the aircraft has Nazi or extraterrestrial origins.
Episode 9At a mysterious site in the Gobi Desert, experts discover a monster graveyard - a groundbreaking find containing treasures of alien beasts.
Episode 10Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 11Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 12Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 13Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 14Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 15Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 16Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 17Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 18Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 19Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Episode 20Satellites orbiting our planet have put more eyes on Earth's vast, unexplored areas of land and sea - revealing baffling new anomalies.
Show more- About this series
- Science Channel's most watched series reveals Earth as it's never been seen before. Illuminating views captured by more than 4,000 orbiting satellites, `What on Earth?' investigates mysteries from strange geological occurrences to weird man-made structures. Every day, the eyes in the sky uncover new mysterious phenomena, and some defy easy explanation. To search for answers, the series combines modern imaging technology with analysis from military and intelligence professionals as well as leading scientists.
- CrewSusanna Herbert (Director), Bella Falk (Director)
- GenreFeatures, Factual
- Seasons7
- StudioSky History
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- There are 7 seasons of What On Earth? available to stream on NOW.