Ancient Aliens

Fick en biblisk patriark instruktioner från 200 änglar högt ovanför jorden? Lärde sig de gamla grekerna att bearbeta metall av en ras fiskmänniskor? Och kan Egyptens mest kontroversiella farao ha varit en utomjordisk varelse?

Giorgio Tsoukalos, teoretiker inom antika astronauter, ser tillbaka på de tio mest extraordinära varelser som vi har undersökt - varelser som kan utgöra övertygande bevis för utomjordiska besök.

Ancient Aliens räknar ner de tio bästa platserna runt om i världen som kan dölja utomjordiska baser, inklusive en grotta under isen i Antarktis, en sjö i Kina som är en hotspot för UFO:n och en pyramid under sluttningarna av Mt Denali.

Ancient Aliens räknar ner de tio mest skrämmande mötena som bara kan vara bevis på utomjordiska besök. Från ett möte på landsbygden i Texas som lämnade åskådare med oförklarliga skador, till mystiska djurstympningar.

Ancient Aliens räknar ner tio av de mest spännande och mystiska symboler och koder som hittats och som kan innehålla bevis på kontakt med utomjordingar. Från glyfer i den peruanska öknen till spiralformade petroglyfer med avancerad matematik.

Ancient Aliens is counting down the top ten most devastating disasters ever documented that might have an otherworldly connection, from a flying monster at a nuclear incident, a meteor that wiped out the dinosaurs, and a deadly virus.

More than 7,000 years ago, the ancient Sumerians established what is considered the world's first civilisation, and they credited their extraordinary achievements to their gods, the Anunnaki.

Along the Earth's north 37th parallel there have been so many reports of unidentified flying objects, animal mutilations, and other mysterious events that it has been dubbed The UFO Superhighway.

For thousands of years, Scotland has been an epicentre of otherworldly phenomena. It is home to mysterious ancient stone circles, stories of strange beings, and is a major hotspot for UFO sightings.

Throughout the world there are mysterious ancient stones shaped into perfect spheres. Many of them show clear evidence of being manmade and some completely defy explanation. Could the mystery of the stone spheres provide clues about humankind's past?

The Mayan culture thrived in the ancient Americas for more than 2,000 years, but evidence suggests they may have had contact with extraterrestrial visitors, and challenges historians' understanding of their culture.

Throughout human history, cultures around the world have held a belief in star gates, through which beings travel to Earth from distant points in the universe and even from other dimensions.

Examines whistle-blower accounts about extraterrestrial presence on Earth, crashed UFOs, recovered alien entities, and claims about how the government goes to great lengths to discredit them.

Now, in the 21st century, the search for extraterrestrial intelligence is ramping up like never before, with powerful new technologies allowing us to explore billions of stars across the universe. Are we on the verge of first contact?

Throughout ancient cultures there are stories of god-like beings providing instruction to early humans, helping our ancestors to establish the first civilisations.

Dr Jacques Vallee is best known for his revolutionary work in the field of UFOs, and his bold theories challenge our notions of alien life.

Deep beneath the sands of Egypt lie 24 enormous sarcophagi - and every one of them is empty.

For more than four decades, award-winning journalist Linda Moulton Howe has covered the most mysterious phenomena on Earth.