Astronomers are on the hunt for exoplanets with atmospheric chemicals that could be a sign of an advanced civilization. These chemicals, known as technosignatures, are found on Earth and are the ...

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An off-the-record conversation about UFOs and alien civilizations late former President Jimmy Carter, who died last month at age 100, had with a reporter has been revealed. Scott Simon ...

Now, one theorist warns that the human civilization of 8.2 billion people ... it is replaced by what could turn out to be a far more advanced ‘postmaterialist’ civilisation based on ...

Mars-Earth transfer When asked why we don’t see evidence of intelligent alien life, Musk proposed the theory of “great filters” — challenges that advanced civilizations fail to overcome.