5 Answers to the Fermi Paradox: Why Haven’t We Made Contact Yet?
The question posed almost 70 years ago by physicist, Enrico Fermi, arguably remains to this day, “Where is everybody?” There exists no widely agreed upon solution to the Fermi Paradox: If there is sufficient probability other life exists in the galaxy, why haven’t we found it? Astrophysicists and theorists have continued to debate this question with new discoveries constantly adding to the conversation. Here are some of their ideas.
Fermi Paradox SolutionsÂ
Enrico Fermi was a brilliant physicist, known for achieving the first controlled nuclear reaction. At the time, he was working at the Los Alamos National Laboratory for the Department of Energy, when one day he and several colleagues began discussing recent stories regarding the UFO phenomenon.
The conversation came to an end, with his colleagues assuming they had moved on from the topic, but later at lunch Fermi shouted in exasperation, “Where is everybody?” They found it amusing, but the question persisted, eventually being fleshed out with a formula that calculated the number of stars, solar systems, and planets in the galaxy and the supposed likelihood of life. It became known as the Fermi Paradox.
Since that day, Fermi’s epiphanic moment has given birth to a number of potential solutions based on three premises: Any extraterrestrial life does not exist; extraterrestrial life exists, but has not yet contacted us; or extraterrestrial life is present, but we are unaware.
The Rare Earth Hypothesis
The circumstances that led to our existence here on Earth today are pretty phenomenal, almost too much so. A laundry list of seemingly improbable events and circumstances allowed life to develop on Earth, one of which is our anomalous moon.
Our abnormally large moon is in near perfect orbit. Most planets our size don’t have moons this large and it is thought that without it, life on Earth wouldn’t exist. The tides, caused by the gravitational pull of the moon, play a key role in plate tectonics. Without plate tectonics, it’s theorized the continental crust would have covered the entire surface of Earth, preventing any oceanic crust. Without the moon, there might not be any oceans.
In our solar system, we’re at a perfect distance from the sun, with large gas giants like Jupiter and Saturn acting as “cosmic vacuum cleaners” on the outer rim. These planets capture the larger asteroids that would otherwise devastate the evolution of life as we know it.
Within the galaxy, our location on the outer edge of a spiral arm also prevents large asteroids, orbiting closer to the galactic center, from coming our way. Also, the inner orbits of the galaxy are mostly dead zones, where high levels of cosmic radiation emit from a massive black hole and a number of incredibly dense neutron stars. Is this the Fermi Paradox solution? We were improbably lucky?
The argument against this theory, proposed by Carl Sagan and Frank Drake, is that we’re pretty mediocre. Our rocky planet is pretty common, as is our solar system, while the region of the galaxy we’re in is non-exceptional, and our galaxy is a type that makes up 77 percent of galaxies in the universe. Therefore, there is a high probability of intelligent extraterrestrial life out there. In fact, there are probably about 200 million planets situated like we are.
The Great Filter
From here out, most Fermi Paradox solutions are based on the Kardashev Scale, a theory about how civilizations might develop to colonize beyond ours. The Great Filter is an attempt to imagine whether there is something preventing us from moving on to the next point of the Kardashev Scale, a Type II civilization that can harness all the energy of its sun.
The Great Filter is a concept, proposed by economist Robin Hanson, which attempts to describe an ambiguity that prevents life from developing past a certain point. It basically states there is something that prevents dead matter from developing and giving rise to life, beyond a certain point. Hanson developed a nine-step list, which may or may not be complete, describing the concept of evolution for intelligent life:
- Life starts with the right star system, followed by:
- Reproductive molecules (DNA, RNA)
- Simple single-cell life
- Complex single-cell life
- Sexual reproduction
- Multi-cell life
- Tool-using animals with big brains
- Our civilization as we know it
- Colonization beyond our level
The Great Filter posits at some point along this scale – most likely the next level beyond where we are now – something will kill us off. Basically, it’s improbable we will colonize beyond Earth or our solar system. Therefore, any other intelligent life forms would be subject to the same principle, and we’ll never meet them. Might there be a chance we made it past the filter? Were other civilizations not as lucky?
Deadly Probes Scenario, a.k.a. The Berserker ScenarioÂ
Anders Sandberg, Stuart Armstrong, and Milan Ćirković made a few hypotheses based on Fermi’s Paradox. The Deadly Probes Scenario is one of their most dystopian theories.
In this scenario, the three hypothesize an incredibly advanced, extraterrestrial intelligence created probes to monitor the galaxy or universe for other civilizations or signs of evolving life. These probes are self-replicating, also known as Von Neumann probes, so they can reproduce and autonomously patrol space to prevent another civilization from rising up and destroying them. There would be four conditions these probes might have to meet to possibly exist:
- They would have to be the cause of the great silence – the reason we haven’t heard anyone.
- They’d have to be compatible with our existence.
- They would be silent in their activities so as not to be visible.
- They would be impossible to overthrow by a new civilization.
There would also be two levels of stability with these probes. Type I stability would be a dominant species of probe that prevents other species from emerging, or Type II, which a coexistence of two or more probe species equally competed with each other for rule over the galaxy.
The authors of this scenario don’t think this is a plausible Fermi Paradox solution, at least within our galaxy. Because if it were, those berserker probes would be incredibly inefficient in not destroying us yet.
A Benevolent or Super Advanced Extraterrestrial Intelligence
Another belief, which is a bit more utopian, is we are still in the nascent phase of what we have the potential to become; a highly advanced race capable of things we can only dream of in sci-fi movies. This could theoretically mean an advanced extraterrestrial intelligence has reached this phase and observed us, but is waiting to reveal itself.
Why wouldn’t this race make its presence known? Most likely because it does not want to disturb us in our evolutionary process. This has become known as the zoo hypothesis: Compared to their level of intelligence, they view us like we view apes.
This civilization might understand it is necessary to let nature play its course as, if we became aware of their existence, we might screw something up. Chances are, they’re beyond the petty problems we face today including war, resource scarcity, and primitive modes of transportation. If they were to get involved, we might freak out and destroy ourselves.
They also might be slowly feeding us technology and information waiting for the time when we’re ready for them to make their presence known.
The authors of the Deadly Probes theory also proposed the aestivation hypothesis. Maybe these highly advanced civilizations are hibernating. The hypothesis states these types of civilizations may have uploaded their consciousness onto computers — a theory posited by Nick Bostrom — which would potentially allow for life to last long after the physical body deteriorates.
In this case, these conscious computer entities would want to wait for the universe to cool down to maximize energy efficiency. According to this theory the thermodynamics of computation makes the cost of a certain amount of computation proportional to temperature. Therefore, the colder the universe gets, the less it costs them to expend energy.
According to their hypothesis, these civilizations have seen it all in the universe’s current iteration. There’s no new information for them to obtain. Kind of depressing, right? So, they’re powering down into sleep mode and waiting until things cool down and maybe get more interesting.
The Holographic Universe
This theory gained a lot of traction lately, even though it was first widely proposed in the premise of The Matrix — nearly 20 years ago. Since Nick Bostrom, Elon Musk, and a slew of NASA scientists expressed their belief in this theory, it has become more popular. Maybe we haven’t made contact with extraterrestrial intelligence because we’re living in a computer simulation.
In this case, a number of theories have branched off from the broader concept. One idea is that an advanced extraterrestrial intelligence created a computer program to run a hyper-realistic simulation for whatever reason. If we had the computing power to achieve this, we probably would too. In that case, how deep does the rabbit hole go? Are they living in a computer simulation, too?
This theory seems to parallel the idea of a multiverse or the idea of infinite parallel dimensions. The difference is only a matter of semantics. Then again, the difference between us living in a computer simulation created by an advanced extraterrestrial race and us living in a world created by a god, is also a matter of semantics. Mind blown? Ours too.
So, what is the true solution to the Fermi Paradox? Will we ever find out? Only time will tell.
About the Author
What Are UAPs: The New Approach to the UFO Phenomenon
UAPs are at the center of the new approach to the UFO phenomenon, a paradigm shift that is redefining how governments, scientists, and military institutions investigate it. Behind this term lies a profound transformation in the institutional perspective, the declassification of documents, and the opening of public debate.
In this article, we explore what UAPs are, how they differ from UFOs, and why their emergence permanently changed the conversation surrounding unidentified aerial phenomena.
Table of Contents
- What Are UAPs and Why the Term Replaced UFOs
- Differences Between UAP and UFO
- How the Institutional View of the UAP Phenomenon Changed
- UAP Cases That Changed the Conversation
- Why UAPs Transformed Modern Ufology
- What This New Perspective Means for Humanity
What Are UAPs and Why the Term Replaced UFOs
UAP stands for Unidentified Aerial Phenomena. The term is used to describe aerial observations that, at the time they are recorded, cannot be conclusively attributed to known technologies, atmospheric phenomena, or conventional causes. Many of these cases are later given ordinary explanations, while others remain unresolved.
Unlike traditional terminology, UAP does not assume prior hypotheses about the origin of the object. It may refer to undocumented technology, unknown atmospheric phenomena, instrument errors, or, potentially, non-human presences. The breadth of the term is precisely what makes it useful for serious analysis: it leaves the door open to investigation without prejudging the conclusion.
Today, the term UAP has become the preferred language in military, scientific, and governmental circles. Its recent adoption, driven largely by institutions such as the Pentagon, marks a shift away from the term UFO, which for decades was associated with popular culture and stigma. Talking about UAPs means approaching the phenomenon from a technical and rigorous perspective, without falling into sensationalism or automatic dismissal.
Differences Between UAP and UFO
Although at first glance UAP and UFO may appear to be synonymous, the distinction between the two terms is significant. UFO (Unidentified Flying Object) focuses on the object itself, which already implies an assumption: that it is a solid entity, generally shaped like a “craft.” UAP, by contrast, focuses on the phenomenon itself, without assuming anything about its physical nature.
This conceptual difference has practical consequences. Under the term UFO, an unexplained light or a strange radar signal could be excluded from official records because it did not match the expected image. With the term UAP, every unexplained observation falls within the scope of study, regardless of whether it has a defined shape or appears only as instrument data, without any direct visual confirmation from witnesses.
Another important difference is cultural weight. The word UFO carries decades of films, novels, sensationalist television programs, and conspiracy theories, which for years made serious investigation more difficult. UAP, as a relatively new and more technical term, allows the subject to be discussed without the immediate associations attached to the older terminology. That is why many researchers prefer to use it when working with military or academic data.
How the Institutional View of the UAP Phenomenon Changed
The shift from UFO to UAP was not merely a linguistic adjustment. It was the result of a profound transformation in the way institutions relate to the phenomenon. For most of the 20th century, governments publicly denied any serious interest in these incidents while simultaneously investigating them through classified programs. That contradiction began to unravel in 2017, when declassified documents and Pentagon reports revealed that official investigations were far more extensive than previously acknowledged.
Behind this shift lies a decisive factor that often goes unnoticed: national security. A significant portion of UAP reports describes objects detected near military installations, especially nuclear-capable bases, aircraft carriers, and aerial training zones.
In several cases, these phenomena were recorded simultaneously through radar, infrared systems, and direct visual observation. Unusual maneuvers, operational interference, and appearances within restricted airspace were also reported, without any clear explanation of their origin. Faced with this type of evidence, ignoring the phenomenon was no longer a viable option for intelligence and defense agencies.
The cultural stigma surrounding the word UFO was also a major obstacle. Military and commercial pilots, scientists, and government officials often avoided reporting sightings for fear of ridicule or professional consequences. Adopting the term UAP was a deliberate way to strip the subject of its stigmatized associations and allow institutions, media outlets, and researchers to approach it without preconceived filters.
At the institutional level, the shift accelerated when the Pentagon created offices specifically dedicated to analyzing the phenomenon, such as the AARO (All-domain Anomaly Resolution Office). Congressional hearings held in the United States in 2022 and 2023 reinforced this trend: lawmakers, military personnel, and officials spoke openly about the issue, helping normalize the use of the term and bringing the debate into the public sphere.
In the series Aerial Phenomena: The History of UFOs, available on Gaia, historian Richard Dolan reviews the key events that have shaped the UAP phenomenon from the 1940s to the present day. Through declassified documents, presidential testimonies, and analyses of military archives, the series offers a rigorous look at the role governments have played in both concealing and later opening discussion around the phenomenon.
UAP Cases That Changed the Conversation
As the term UAP became more established, a series of specific cases brought it to the center of public debate. These were not isolated, unverified sightings, but incidents documented by trained military personnel, captured through professional instruments, and examined by official investigators. Each of these cases helped give the phenomenon a new level of legitimacy.
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The “Tic Tac” Video and the Declassified Reports
In 2004, U.S. Navy pilots reported an object that was white, elongated, and without visible wings, roughly shaped like a capsule, earning the nickname “Tic Tac” because of its resemblance to the mint candy. The object displayed aerodynamic capabilities that appeared impossible for any known technology: extreme acceleration, sudden directional changes, and no visible means of propulsion. Video footage of the incident, captured by U.S. Navy combat systems, gained widespread public attention in 2017 following an investigation published by The New York Times.
The Tic Tac case and other declassified videos marked a turning point. For the first time, official material confirmed that the armed forces had recorded genuinely inexplicable phenomena. What had long belonged to the realm of popular imagination began appearing in official reports, mainstream media coverage, and governmental commissions.
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The United States Congressional Hearings
The public U.S. Congressional hearings on UAPs held in 2022 and 2023 represented a historic turning point. For the first time in more than fifty years, the subject was discussed in an open session at the Capitol, featuring testimony from military officers, former intelligence officials, and pilots.
What mattered most about these hearings was not any single revelation, but the fact that they took place at all. During the sessions, several former officials stated under oath that internal programs existed for the recovery of “non-human vehicles,” and also mentioned the alleged possession of “non-human biologics.”
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Testimonies From Former Military Personnel and Commercial Pilots
Beyond the videos and hearings, a growing number of pilots and former military personnel have begun speaking openly about encounters with UAPs. Their accounts share recurring patterns: objects moving at impossible speeds, the absence of thermal signatures, the ability to operate in both air and water, and behaviors suggesting intelligence behind their movements.
These testimonies come from individuals with advanced technical training, calibrated instruments, and professional careers at stake. Their credibility has pushed many to acknowledge that the UAP phenomenon can no longer be dismissed as mere confusion. More than any isolated video, it is this accumulation of qualified testimony that has changed the weight of the phenomenon within serious public debate.
Why UAPs Transformed Modern Ufology
The adoption of the term UAP did more than change the language: it transformed ufology itself. What had functioned for decades as a marginal field, sustained by enthusiasts and filled with unverified theories, began to professionalize. Researchers with scientific backgrounds, journalists from established media outlets, and former government officials joined the study of the phenomenon, bringing methodological rigor and access to information that had previously been unimaginable.
Another major shift is the change in focus. While classical ufology centered primarily on the question, “Are they extraterrestrials?”, the UAP approach prioritizes documenting and understanding the facts first, leaving the discussion about their origin for later. This reversal of priorities allows for genuine progress without immediately falling into speculation.
Added to this is the geopolitical dimension. Today, the possibility that different governments may have recovered non-conventional technology is openly discussed, carrying implications for national security, international cooperation, and the global balance of power. The phenomenon ceased to be a matter of belief and became a strategic issue, and more than anything else, that explains why the debate can no longer be dismissed so easily.
What This New Perspective Means for Humanity
The new approach to UAPs raises questions that go far beyond simply identifying objects in the sky. If even a portion of these phenomena cannot be explained through known physics or documented human technology, we are facing one of the most significant mysteries of our time.
On an individual level, taking the phenomenon seriously invites us to question inherited assumptions about reality. Accepting the existence of the unknown and allowing that openness to change the way you see the world is, in itself, an act of inner expansion. You do not need to have all the answers in order to begin asking better questions.
On a collective level, UAPs act as a catalyst. Every documented case pushes humanity to reconsider its understanding of the cosmos, its place within it, and the limits of what is possible. The conversation surrounding UAPs is, in reality, a conversation about who we are and what surrounds us, which is precisely what makes it one of the most important questions of our time.
