What’s the explanation behind the construction of pyramids? Who is responsible for forming crop circles? The History Channel’s popular series, Ancient Aliens, proposes some intriguing theories on these mysteries. This long-running show, which has been airing since 2009, boasts over 200 episodes filled with captivating speculations about the connections between science, mythology, and history, suggesting they might share a common origin.
Regardless of your beliefs, the series has presented many intriguing episodes that sparked various theories. If you’re considering tuning in, I’ve compiled a top ten list of the most compelling Ancient Aliens episodes that you should definitely check out.
The Evidence
Ep. number: Season 1 Episode 1
Aired: April 20, 2010
Inquiry: “Were ancient extraterrestrial visitors to Earth responsible for advanced technologies we see today, such as aircraft, power grids, and construction equipment? Ancient Indian texts from around 6000 B.C., written in Sanskrit, depict detailed descriptions of flying vehicles known as Vimanas.
Stone formations from ancient Egypt show signs of skilled saw work, suggesting advanced craftsmanship. Interpretations of the Jewish Zohar texts present images of a life-supporting manna machine, strikingly reminiscent of contemporary chlorella algae processing facilities. Is it plausible to consider these as early manifestations of current technology, or is there proof that such advanced machinery was already in operation on Earth millennia ago?
“Why I recommend starting here: Jumping in at the deep end can be exciting, especially when it comes to shows like Ancient Aliens! The first episode serves as an ideal starting point, guiding you through the core theories that underpin the series and setting the stage for what’s to come across all seasons.
Watch the full episode here.
The World On Alert

Ep. number: Season 18 Episode 4
Aired: January 28, 2022
As a keen observer, I find myself intrigued by the recent open discussions among top-tier government officials worldwide concerning Unidentified Aerial Phenomena. One might wonder, what’s the reason behind this sudden interest? Some ancient astronaut theorists posit that the amassed evidence has grown so compelling that it can no longer be disregarded. They believe we are on the brink of unveiling the truth about an extraterrestrial presence on our planet.
Here’s a reason to check it out: This episode from the latest season of Ancient Aliens is not only highly-rated on IMDb with an 8.2 score, but it’s also one of the series’ most popular episodes. It presents some thought-provoking hypotheses and provides what seems like supporting evidence. You’re bound to find it intriguing!
Watch the full episode here.
The Disclosure Event

Ep. number: Season 18 Episode 1
Aired: January 7, 2022
In 2021, the U.S. government ended a 70-year long tradition of keeping quiet on UFOs and released an unprecedented report about Unidentified Aerial Phenomena. Could this mark the beginning of full government disclosure regarding the mysterious objects often seen in our skies? If so, will we soon learn that these objects might indeed originate from outer space?
Here’s why you should tune in: We have another fresh episode here, offering intriguing perspectives on UFOs and Unidentified Aerial Phenomena (UAP). Contrary to some speculations, this report doesn’t confirm that these objects are of extraterrestrial origin. However, it’s an exceptionally well-produced episode, likely ranking among my top picks from the series.
Watch the full episode here.
The Alien Architects

Ep. number: Season 12 Episode 4
Aired: May 19, 2017
Remarkably, numerous architectural wonders from different civilizations across vast distances show striking resemblances, despite the belief that these distant societies had no interaction or influence on each other.
Located thousands of miles apart, the Giza Pyramid complex in Egypt and the Avenue of the Dead in Mexico’s Teotihuacan share a striking similarity – both contain pyramids that are aligned with Orion’s Belt constellation. Moreover, an ancient Cambodian temple named Baksei Chamkrong mirrors almost perfectly the Temple of the Jaguar in Guatemala.
The Giza Pyramid complex in Egypt and Teotihuacan’s Avenue of the Dead, situated more than 7500 miles apart, both feature pyramids that are aligned with Orion’s Belt constellation. Additionally, the Baksei Chamkrong temple in Cambodia bears a striking resemblance to Guatemala’s Temple of the Jaguar.
*Numerous massive stone constructions, each weighing more than 100 tons, were constructed by ancient societies. However, it’s fascinating to ponder how our primitive ancestors managed to accomplish such remarkable feats. Moreover, the striking similarities between these sites lead one to wonder if they could have all been designed by a common civilization or, perhaps, extraterrestrial architects?*
This program delves into an intriguing question: how could our ancestors construct such complex architectural marvels without modern technology? Did humanity achieve this level of advancement independently, or was there assistance from extraterrestrial sources?
Watch the full episode here.
The NASA Connection

Ep. number: Season 4 Episode 5
Aired: March 9, 2012
Evidence from NASA researchers, ex-astronauts, and classified government documents suggests a past interaction with extraterrestrial beings.
The episode “NASA Connection” on Ancient Aliens is a subject of much discussion. Several reliable sources shared their insights, and there seems to be substantial evidence suggesting that NASA, along with mankind as a whole, has already had contact with extraterrestrial life. Make up your own mind about its validity.
Watch a snippet from the episode here.
Top Ten Alien Artifacts

Ep. number: Season 17 Episode 7
Aired: October 8, 2021
Exploring Mysterious Objects Across the Globe, Here Are the Top 10 Alien Artifacts That Could Possibly Prove Ancient Visits by Extraterrestrials
The reason to watch it: In this episode, the team from Ancient Aliens presents a fascinating countdown of ten alien artifacts that have the most credibility. They delve deeply into each artifact, discussing their origins and potential extraterrestrial connections, sharing intriguing theories about their true nature.
The Tesla Experiment

Ep. number: Season 8 Episode 6
Aired: August 1, 2014
He was one of the century’s most productive inventors, responsible for lighting up the world. Nikola Tesla guided humanity into a new industrial phase and paved the way for our current technological era. However, some wonder if his achievements were orchestrated by forces beyond our understanding.
A man steeped in enigma and fascination, Tesla was known for gaining insights with a sudden burst of genius, as he could vividly imagine his inventions and mentally manipulate them. He felt an uncontrollable urge to create the future. However, he asserted that he communicated directly with intelligent extraterrestrial beings.
Could it be that the person often referred to as this visionary and eccentric scientist, who seemed so far beyond his contemporaries, was in reality a human conduit or vessel? An individual chosen to further human development and prepare the path for a potential reunion with our extraterrestrial forebears in the future?
Here’s why you shouldn’t miss this episode: It remains unclear whether Nikola Tesla communicated with extraterrestrials or was just an exceptionally brilliant mind misunderstood by his contemporaries, but either way, witnessing the marvels he brought to life and their profound impact on all of humanity is truly revolutionary. This episode is definitely a must-see!
Watch a snippet from the episode here.
The Mayan Conspiracy

Ep. number: Season 4 Episode 1
Aired: February 17, 2012
Over a span of almost two thousand years, the mighty Mayan civilization held sway over Central America. However, around the 9th century A.D., the grand Mayan cities stood empty, and the Mayan populace seemed to vanish without a trace. What could have befallen this cultured society?
Here’s why you shouldn’t miss it: The most intriguing Ancient Aliens hypotheses center around the enigmatic Mayan culture, and this episode skillfully explores those theories using artifacts, architectural wonders, and other evidence that suggest the Mayans were a civilization far ahead of their time, shrouded in mystery.
Watch the full episode here.
Angels And Aliens

Ep. number: Season 2 Episode 7
Aired: December 9, 2010
Throughout ancient texts and folklore, winged messengers from heaven are often depicted. However, are angels just figments of human imagination, or do they truly exist? If they do, where do they originate? Some ancient astronaut theorists propose that the Old Testament in the Bible appears to be a guidebook on extraterrestrial encounters.
Angelic accounts are not exclusive to Christian texts; they are also present in Islamic and Hindu literature. Countless narratives worldwide depict celestial beings, tasked with observing and protecting, along with stories of potent warriors shaping events ranging from devastating calamities to the establishment of tranquility.
Could angels be supernatural entities originating from the heavens, as commonly believed, or could they be interstellar visitors hailing from far-off galaxies instead? Is it possible that they are merely space travelers who have temporarily landed on Earth?
Why you should tune in: The episode’s official description captures its essence well – are angels merely mythical entities, or could they represent something else entirely? This idea might be a bit unpolished, but it makes for an interesting viewing experience.
Watch the full episode here.
Destination Mars

Ep. number: Season 11 Episode 2
Aired: May 13, 2016
In approximately two decades, we anticipate dispatching our initial Martian colonists to the Red Planet. These astronauts will embark on a six-month voyage, making them the first extraterrestrial visitors to Mars. Their mission involves living and potentially dying there without ever returning to Earth. However, what is it about this specific planet that has consistently piqued our curiosity?
New discoveries by NASA indicate that not just traces of liquid water exist on the planet, but there’s a strong possibility that life on Earth originated from Mars. Some proponents of Ancient Astronaut theories propose that the emergence and evolution of life on Earth may bear similarities to the methods scientists are currently devising for sustaining human life on Mars.
Is it possible that intelligent life from Mars once inhabited Earth in our distant history? Might our journey to Mars not only reveal the secrets of our ancient, alien heritage – but also provide a means for ensuring the continued existence of humanity?
“Personally speaking, whenever I ponder the idea of extraterrestrial life, Mars is the planet that immediately springs to mind. In this captivating episode, we delve into speculations about potential Martian civilizations and whether such a society might be thriving on the Red Planet.”>
Watch the full episode here.
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2025-05-31 11:15