Hyper-intelligent aliens 'have already explored the galaxy and visited Earth'
Scientists have suggested that there could actually be life out there but we just don't know about it yet because the extraterrestrials haven't been to visit us for 10 million years.published in The Astronomical Journal has suggested that intelligent alien life is out there but it's just taking its time to explore the galaxy.
"Either nobody leaves their planet, or we are in fact the only technological civilisation in the galaxy."The researchers theory revolves around the fact that stars and their planets orbit the centre of the galaxy at different speeds and in different directions. This kind of travelling would take civilisations longer to spread across stars than previously thought.
Carroll-Nellenback told Business Insider: "If long enough is a billion years, well then that's one solution to the Fermi paradox.
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