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They are often portrayed on screen as little green men with elongated limbs and saucer-like eyes.

From E.T to the X-Files, aliens from outer space have captured our imagination for decades.

Yet a new book from a leading evolutionary biologist argues that if they exist and we ever encountered them, they would look very similar to us.

Professor Simon Conway Morris said extra-terrestrials that resemble human beings should have evolved on at least some of the many Earth-like planets that have been discovered by astronomers.

In his new book published on 2 July, The Runes of Evolution, the University of Cambridge academic builds on the principle of convergent evolution – that different species will independently evolve similar features, with the comparison of the camera eye of an octopus and a human eye a favourite example – and argues it will not just took place on Earth.

“An area of biology which is becoming popular, perhaps too popular, that the possibility evolution is becoming much more predictable than people thought,” he told The Independent. “The book is really trying to persuade the world that evolutionary convergence is completely ubiquitous. Wherever you look you see it.

“The theme is to try and drive the reader, gently of course, into the possibility that the things which we regard as most important, ie cognitive sophistication, large brains, intelligence, tool making, are also convergent. Therefore, in principle, other Earth-like planets should very much end up with the same sort of arrangement.”

Professor Conway Morris, a Fellow at St John’s College, said it follows that plant and animal life on other planets able to support life would also look similar to Earth’s.

He said: “Certainly it’s not the case that every Earth-like planet will have life let alone humanoids. But if you want a sophisticated plant it will look awfully like a flower. If you want a fly there’s only a few ways you can do that. If you want to swim, like a shark, there’s only a few ways you can do that. If you want to invent warm-bloodedness, like birds and mammals, there’s only a few ways to do that.

“The whole business of extra-terrestrial life, Kepler [the most Earth-like planet ever discovered], the search for extra solar planets, and of course the various missions to Mars. This is all going along at such a pace at the moment we can be reasonably sure [any current ideas] might be open to revision in a few years.”

His theory leads on to Enrico Fermi’s famous paradox – why, if aliens do exist, have they not made contact. He admits his book goes “off-piste for a bit of fun” in the last chapter when dealing with this problem.

Professor Conway Morris said: “Fermi’s paradox seems to be coming rather sharply into focus. If I’m on the right track then the likelihood of intelligence is evolving and actively engaging in some sort of transgalatic expeditions doesn’t seem to be completely beyond the realm of possibility.

“What Fermi didn’t know when he asked that famous question was that the number of Earth-like planets is absolutely gigantic now. More problematic is that many of these solar systems far, far pre-date our solar system. They would have, in principle, a major head start of hundreds of millions, if not billions, of years.

“The problem is exceedingly acute: we shouldn’t be alone but, famous last words, all the evidence suggests we are. Maybe [aliens] are hiding, the Arthur C Clarke idea, or as Stephen Baxter mischievously suggested we live in a virtual world. I don’t honestly know. My suspicion is we have only begun to scratch at the surface of reality, for want of a better word.”

Professor Conway Morris said one of the main themes of his new book was his desire to “re-energise people and get their sense of curiosity running again”. Convergence is demonstrable at every point of evolutionary history, he argues, from early cells, through to the emergence of tissues, nervous systems, limbs and the ability to make tools.

He said: “There is a growing interest in convergent evolution but I’m always willing to push it as far as I can. I’ll always say ‘show me anything which has only evolved once’ and I’ll try and jump up and say ‘no I can give you another example’.

“Convergence is ubiquitous and if you think complex things are difficult to make, well, with great respect, think again. ( via independent.co.uk )


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  1. forget the human expert.life is not based on oxigen or hidrogen everywhere in the universe.like earth show we got animals who don t look like humans and are far away smarter then us. singularity don t apply in the universe otherwise nothing would exist ! stop being stupid pls and look around u and up in the universe. we are in 2016 !

  2. There is some we dont know , and the secret documents ? [ burning or —— ? ] , mayby a good hacker can look in this ? sure the aliens have supersonic aircrafts , shooting they shoot with their eyes and fingers. and out of their toes too wath a SHIT . only we do that ,killing and destroy , time univers travelers ar not like you earth people i think , matery -spectrum and more

  3. I have not met any aliens that know of, however I had a close encounter in the early ’60’s when I lost 4-5 hours.

  4. I surely agree with the article. I would believe only first generation Off- Planet humans would move their homes here and have mastered the language of choice. This would be like programs, TV broadcasts or piped data to alternate off world locations. Comings and going is constant as occasionally observed by NASA. As far as tracking goes, forget it.
    When we master gravity I would expect lateral sources will join in and help us. Why we aren’t brought to the front on this issue should be quite apparent. I like to think it is subtle mind control from a slightly more intelligent race of people with maybe some genetic advantages that are brought on by their science and technology. As far economics are concerned they could be playing a part in that but to what avail?

  5. i for 1 had one in my shower area .. When i found it i punched it . And went in the other room to get my phone . When i went back it was gone . I could not take a pic because of that

  6. ^^^I think that premise is kind of interesting, Diane. It shows us that humans will someday reach that level of intelligence. But what worries me is what happens to us between the next 10 to 20 years and then ( when we’ve evolved to the point where we have starship capability ).

  7. What freaks me out, is the theory that any of these ET’s are really US- time travelling! I don’t why, out of all the theories out there- this one is so unsettling for me, I don’t why but, it scares me!

  8. The “experts” are leaning more to an insect like creature. You have to wonder, with how many different species of bugs on our planet. They discover new bugs on almost a daily basis, who really knows what the human species will evolve into? Just look at photos of people 100 years ago, people were smaller, life span was much shorter & any man or woman that had ANY muscle mass, were considered “laborers” & the upper classes were soft! Look at our evolution, speaks for itself!

  9. the ones that dont look like us don’t look like us the ones that do.. do! the majority is bi-pedal humanoid in structure with a ton of other elements used instead of carbon like we have …who are these ppl in university that have no freeking clue like wtf are they teaching ..LIES??

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