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A terrifying reason why we don’t hear from extraterrestrials – and it means bad news for Earth

SCIENTISTS may have found a solution to a cosmic dilemma that has baffled alien hunters for decades.

In a recent paper, two astrobiologists propose a new theory to explain why we’ve never encountered extraterrestrials.

The contradiction between the sheer size of the universe and the lack of evidence of extraterrestrial life is called the Fermi paradox

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The contradiction between the sheer size of the universe and the lack of evidence of extraterrestrial life is called the Fermi paradoxPhoto credit: Getty

They argue that alien civilizations, like cities and nations, could collapse after rapid expansion.

This means that life beyond Earth may never progress far enough to create intergalactic spaceships capable of reaching our planet.

While some don’t last long enough to reach us, others fall apart and don’t make contact.

If the theory proves true, it could mean that humanity is heading for a similar fate in the not too distant future.

The study, published earlier this month in the Royal Society Interface, is the latest attempt to solve the Fermi paradox.

The paradox describes the contradiction between the size of the universe and the lack of any evidence of life outside of Earth.

We know there are countless habitable planets in the cosmos, but have never found any evidence of extraterrestrials.

dr Michael Wong from the Carnegie Institution for Science and Dr. Caltech’s Stuart Bartlett have their own theory as to why.

In the paper, they highlight that civilizations on Earth tend to meet their end after overexpanding.

Examples of this can be found throughout history from the Roman Empire to the ancient Egyptians.

Wong and Bartlett believe the same principle applies to space civilizations.

If an alien society grows too large, it will likely collapse before it can build intergalactic spaceships.

This means that intelligent life on distant worlds simply cannot reach us before launching itself into the ground.

Wong and Bartlett say that while some civilizations burn out, others are aware of their impending demise and are choosing to halt their growth.

So the universe is full of societies that either shine brightly but quickly or reach a state of equilibrium.

Academics are sounding the alarm that humanity may be heading for the former rather than the latter.

The Fermi Paradox has had scientists scratching their heads for decades.

Named after the Italian-American physicist Enrico Fermi, it can be summed up with the question: where are all the aliens?

Scientists have previously posited that our failure to find ET may be due to a lack of intelligent civilizations.

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All that exist are so rare and so distant from each other that the chances of them meeting are close to zero.

Other theories lean towards the idea that intelligent life is aware of our existence but simply chooses not to interact with us.

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https://www.thesun.ie/tech/8821645/terrifying-reason-dont-hear-aliens-warning/ A terrifying reason why we don’t hear from extraterrestrials – and it means bad news for Earth

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