11 Traits Aliens Must Have According To Science

If you believe what Hollywood tells us about alien life forms you’ll probably assume they’d be giant, slimy and really, really anti-human. As scientists don’t make a lot of movies, and movie producers aren’t typically awesome at science, this isn’t a very accurate portrayal of the interstellar life that’s at all likely to ever reach Earth.

Don’t get me wrong, it probably still won’t go well for us, but the faces of the creatures that would change our world forever will look very different to how we’ve imagined them. To set the record straight, great minds like Stephen Hawking and his contemporaries have given their opinions on what traits an alien race would have to possess in order to make it across the galaxy and pay a visit to the human homeworld.

Aggressiveness

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What separates humans from other species on the planet in terms of evolution comes down to a simple principle: aggression. For any species to thrive within a given habitat it has to confront adversity and overcome it. These struggles drive evolutionary adaptation. The dominant life form on a planet (which aliens would almost certainly have to be) must have been able to master their environment.

A paper published by the University of Missouri suggests this means they would be aggressive—they would populate and conquer their surroundings in order to progress. If they are more intelligent than we are, they will likely see us as a resource, the way we view farm animals and their habitats. space science space travel science technology space science space travel science technology

Explorers

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Any life form that reaches Earth will, by definition, be an explorer. Looking to our own culture for clues, we immediately see how unexplored territories are targeted for their resources. We wonder what lands might possess that can help further our causes. Look at Columbus and the Americas, Marco Polo and the East Indies, the Vikings and most of Europe.

According to Stephen Hawking, aliens are likely to seek out other planets in order to colonize them or mine them for resources. Aliens may not come to destroy our planet, but they will in all likelihood seek to exploit what they find to increase their race’s reach, as again this is the hallmark of a developed species. space science space travel science technology space science space travel science technology

Viral And Bacterial Immunity

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It’s a common trope in Science Fiction that aliens, having never encountered Earth bacteria before, will succumb to simple diseases which they have no immunity to. Just look at the pilgrims and conquistadors, and the havoc smallpox and typhus wreaked on unexposed native populations. But conquistadors and Aztecs were both human. According to Seth Shostak, senior engineer from SETI, bacteria are limited to the life forms they are biochemically related to.

Our germs have evolved to survive on our unique DNA. Even viruses and bacterial infections that infect one species on our planet will only rarely spread to another. Dogs don’t routinely get the ‘flu, for example. Any alien life form that invaded earth will likely be immune to earthly diseases, so don’t expect a War of the Worlds solution.

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