Aliens could be just like humans in the way they behave and look, scientist says

Aliens could behave just like humans and even look similar to us with a "left and right side", a top scientist has told Daily Star Online.

The recent discovery of a chemical key for supporting life on Venus has led experts to believe the existence of life on other planets is even more likely.

However, what we don't know is what these living organisms would look like, because all we have is the Hollywood image of a "green creature with big eyes and tentacles".

What's more likely is that even if there is alien life, it will be microscopic and living organisms will still need to "follow the laws of biology," according to an expert.

Understanding the laws of biology can help us discover how aliens would communicate, move and reproduce.

"They need to eat, and they need to find ways to cope with the fact that other aliens are going to try to eat them," says Dr Arik Kershenbaum, author of The Zoologist's Guide to the Galaxy.

But this doesn't mean aliens will be exactly like us – it just suggests they will have some of these qualities through the process of natural selection.

According to Dr Kershenbaum, aliens are likely to be similar to us in the way they behave.

Just like every living being on Earth, they too are likely to have a "left and right side".

"It's just so incredibly efficient that it's almost inconceivable that alien animals won't have that feature of their bodies too," says Dr Kershenbaum.

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Theoretically, aliens are also likely to have legs – simply because through evolution this would be the most efficient way to get around on a solid surface.

Although they could move around like us, when it comes to communication things may be a bit different considering the difficulties around speaking in the vacuum of space.

Dr Kershenbaum suggests the alternative communication might be using smells, if not sound and light.

Although the language of smell "is slow, and the information is easily corrupted".

What we do know is since the discovery of phosphine in Venus, it's likely the chemical makeup of aliens is different to ours.

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This suggests their reproductive system may also be in contrast – however they will reproduce sexually if they are complex animals.

The expert says: "Aliens might have three parents, or four, or 20. But somehow they're going to mate, because otherwise they probably wouldn't evolve beyond microbes."

Considering the recent breakthrough, what we do know is that we have the ability to probe the atmosphere of other planets in our universe and "there are millions of such planets in the Galaxy, so it won't be long before we do find life," concludes Dr Kershenbaum.

Dr Arik Kershenbaum's book 'The Zoologist's Guide to the Galaxy' is available here.

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