Watch with free trial
Sign in
In Search of Aliens

In Search of Aliens

One of the great debates of our time is whether or not aliens exist. Writer/researcher Giorgio Tsoukalos believes they do and has traveled around the world in search of evidence that proves outer-space beings have had contact with Earthlings. "In Search of Aliens" follows Tsoukalos' explorations of some of the planet's mysteries that may have extraterrestrial foundation. The lost city of Atlantis and the possible existence of Bigfoot are among the often-explored legends that Tsoukalos tries to solve.
1 seasonDocumentary, MysteryTV-PG
Essential planBundle+ plan
Watch with free trial
Compare plans
HISTORY channel logo
7-day free trial (new users only), then $25 + tax per month.
Cancel anytime. See terms.

Watch Now

Season 19 of 10 Episodes

  • Ancient Astronaut Theorist Giorgio A. Tsoukalos looks at recent discoveries related to the story of the lost city of Atlantis.

  • Nazi scientists developed advanced weapons, including the Die Glocke, which is believed to have been a time travel device.

  • Sightings of creatures similar to the Loch Ness Monster have been documented all over the world for hundreds of years.

  • An unusually smooth and magnetic rock with a cryptic design was found in Roswell, N.M., in 2004.

  • Megalithic structures on the Mediterranean island of Malta offer possible clues to an extraterrestrial connection; investigating stories of the legendary creatures of the island's local folklore.

  • The possibility that the ruins of Puma Punku offer evidence of advanced technology being used in the ancient past.

  • Washington D.C. architecture was inspired by the ancient world, as seen in the Greek pillars, Roman domes and even an Egyptian-style obelisk that mark the landscape.

  • Nazca is one of the most mysterious sites on Earth; the vast desert is covered with hundreds of ancient geoglyphs depicting animals, human-like figures and strange geometric designs.

  • Ancient Astronaut theorist Giorgio A. Tsoukalos looks into unexplained mysteries that suggest humans are not alone in the universe.

Record to Watch Later

1 episode will be broadcast over the next two weeks

    The Mystery of Loch Ness
  • The Mystery of Loch Ness

    Sightings of creatures similar to the Loch Ness Monster have been documented all over the world for hundreds of years.
    Upcoming
In Search of Aliens

More about In Search of Aliens

One of the great debates of our time is whether or not aliens exist. Writer/researcher Giorgio Tsoukalos believes they do and has traveled around the world in search of evidence that proves outer-space beings have had contact with Earthlings. "In Search of Aliens" follows Tsoukalos' explorations of some of the planet's mysteries that may have extraterrestrial foundation. The lost city of Atlantis and the possible existence of Bigfoot are among the often-explored legends that Tsoukalos tries to solve.

Starring

Giorgio Tsoukalos, Erich von Däniken, David Childress, Steve Feltham, Juan Navarro

Subscribe to Enjoy 70+ Channels

Watch and record live TV with a Philo subscription

One Subscription.
Endless Entertainment.
Unlock live TV, binge-worthy shows, hit movies, and more. Starting at $25/month.
View plans
  • Ancient Aliens: Origins
  • Ancient Aliens
  • Expedition Unknown: Hunt for Extraterrestrials
  • The Secret of Skinwalker Ranch
  • UFO Hunters
  • In Search Of
  • Hangar 1: The UFO Files
  • Hunting Atlantis
  • Alien Files Reopened
  • NASA's Unexplained Files
  • Love After Lockup
  • SpongeBob SquarePants
  • The First 48
  • The Golden Girls
  • Tyler Perry's House of Payne
  • 90 Day Fiancé
  • Fatal Attraction
  • For My Man
  • Martin
  • The Big Bang Theory

Frequently Asked Questions

  • Philo is a live TV streaming service that offers two plans to fit your entertainment needs:

    Essential ($25/month): 70+ live channels and over 75,000 movies and shows on-demand. New users get a 7-day free trial!

    Bundle+ ($33/month): Includes all the channels and entire streaming library available in the Essential plan, the entire AMC+ library, and access to HBO Max Basic with Ads plan and discovery+ included.

    Both plans: offer 1-year unlimited cloud DVR, let you stream on up to 3 devices at once, create up to 10 profiles, and cancel anytime with no contract.

    Free Channels: Not ready to subscribe? You can also enjoy Free Channels with no credit card required—simply create your account and start watching.

  • Yes! New users that sign up for the Essential plan can try it free for 7 days. You can explore our channels, features, and content before your subscription begins. No contract required—cancel anytime before your trial ends with no charges.

    • An email address
    • A future payment method
    • A broadband internet connection
    • A supported device
    Philo devices
    Web, iPhone & iPad, Android phones & tablets, Roku, Fire TV, Samsung TV, VIZIO TV, LG TV, Apple TV, Android TV, and Chromecast via Android
  • Yes! You can record an unlimited amount of live or upcoming content to your cloud DVR and save them for up to a year. No equipment needed!
    Save
  • Nope! No hardware is required, ever. Philo's DVR is already built into the app, so there's nothing to plug in, set up, or pay extra for.

    With an Essential or Bundle+ subscription, you get unlimited DVR storage included, and your recordings are saved for a full year. If you're watching with the Free Channels, recordings are saved for 30 days.

  • Yes! You can enjoy tons of premium television and movies by upgrading your Philo subscription plan with add-ons.

    Here is a list of our available add-ons:

    • HBO Max Standard (ad-free): Watch HBO Originals and hit movies ad-free for $13 more per month. Live sports included (in HBO Max app).
    • Movies & More: Watch award-winning films, cult classics, celebrity stories, documentaries, and more - for $3 more per month.
    • AMC+ (ad-free): Enjoy ad-free access to the entire AMC+ library for $4 more per month.
    • MGM+ (ad-free): Stream thousands of the latest hits, fan favorites, original series, documentaries, and comedy specials for an additional $8/month.
    • ALLBLK (ad-free): Stream original series, independent films, nostalgic Black cinema, reality, and lively stage plays for $7 more per month.
    • Hallmark+ (ad-free): Watch exclusive originals, reality shows, rom-coms, cozy mysteries, heartfelt dramas, and beloved holiday movies for an additional $8/month.
    • STARZ (ad-free): Enjoy today’s hits, classic movies, and bold original series for an additional $12/month.
  • HBO Max:
    • Sign up for the Bundle+ ($33/month) plan.
    • Go to your Philo account page and follow the steps to activate your HBO Max Basic with Ads plan account.

    discovery+:
    • Sign up for the Bundle+ ($33/month) plan.
    • Go to your Philo account page and follow the steps to activate your discovery+ account.