Join or Sign In
Sign in to customize your TV listings
By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.
What on Earth? Season 6 Episodes
Season 6 Episode Guide
9 Episodes 2019 - 2019
Episode 1
World's Deadliest Threats
Thu, Jun 6, 2019 60 mins
Experts reveal the truth behind dangerous threats in top-secret locations all over the planet.
Episode 2
Monsters of Diamond Desert
Thu, Jun 13, 2019 60 mins
An abandoned ghost town in a remote desert with a dark past is examined; and experts investigate if a strange facility in Russia it's hiding evidence of alien life.
Episode 3
North Korea Death Star
Thu, Jun 20, 2019 60 mins
Experts look into a mysterious structure in North Korea, and if there are threats to it.
Episode 4
Aliens of the Infinity War
Thu, Jun 27, 2019 60 mins
Experts find out if a strange pattern is an extraterrestrial response to a message sent to aliens.
Episode 5
The Cave to Hell
Thu, Jul 11, 2019 60 mins
A sinister cave is discovered in a remote corner of Iceland. Experts uncover a secret underworld tunneling to unknown depths. Using cutting-edge tech, they investigate if this strange place could hold secrets of alien worlds.
Episode 6
Terror of the Ice Snake
Thu, Jul 18, 2019 60 mins
In the white ice of Antarctica, satellites discover a mysterious trail of sinister black objects, and when experts discover that it's moving, they use cutting-edge tech to investigate who or what is behind this strange phenomena.
Episode 7
Curse of Genghis Khan
Thu, Jul 25, 2019 60 mins
When a strange structure is discovered in the Gobi Desert, experts investigate if this mysterious site could reveal the whereabouts of lost treasure, which might change everything we know about Genghis Khan and the Mongol warriors who once lived here.
Episode 8
The King at Roswell
Thu, Aug 1, 2019 60 mins
When a strange, red plane is discovered near the site of the Roswell UFO incident, experts wonder if the aircraft has Nazi or extraterrestrial origins, and their investigation reveals new secrets about one of America's most famous faces.
Episode 9
Treasures of Monster Graveyard
Thu, Aug 8, 2019 60 mins
Experts look into the newly-discovered graveyard at Gobi Desert and how it is connects to extraterrestrial activities.
