Sci-fi films and TV shows have routinely depicted a brutal race of aliens visiting Earth in their spaceships and enslaving unfortunate Earthlings.
But according to one expert, extraterrestrial life may actually be too scared of ‘dangerous’ and ‘violent’ humans to want to come here.
Dr Gordon Gallup, a biopsychologist at the University of Albany, argues that humans are ‘dangerous, violent and ceaselessly engage in endless bloody conflicts and war’.
For this reason, aliens with the technological capability of making a visit to Earth – if they exist – are likely inclined to stay away for fear of death and genocide, according to Dr Gallup.
No life beyond Earth has ever been found and there is no evidence that alien life has ever visited our planet. But this may be due to extraterrestrial life being too scared of ‘dangerous’ and ‘violent’ humans (artist’s impression)
Dr Gordon Gallup (pictured) is a biopsychologist at the University at Albany
Dr Gallup has presented his argument in an open access paper published in the Journal of Astrobiology this month.
‘If [alien life] exists it may have found us by now and discovered that humans are dangerous, violent and ceaselessly engage in endless bloody conflicts and war, and continually develop even more powerful weapons of mass destruction,’ Dr Gallup says.
‘It would also be obvious, that as a byproduct of increasing pollution, habitat destruction, coupled with endless wars, pillage, death, destruction and the desire for conquest, that humans pose an unparalleled and unprecedented risk not only to other life forms on Earth but to life on other planets.’
As an example, Dr Gallup cites ‘the total destruction of the highly advanced Aztec and Inca civilizations’ and the subsequent genocide of the native people, their temples and buildings destroyed and their wealth and natural resources stolen.
‘If the humans of Earth became aware of advanced civilizations and desirable resources on other worlds, might these native extraterrestrial populations eventually suffer the same fate as befell the natives of Mexico and Peru?,’ he writes.
‘If there is intelligent life elsewhere, they may view humans as extremely dangerous. Maybe this is why there is no proof or compelling evidence of extraterrestrial intelligence: we pose too great a risk, and they do not want to be discovered.’
During his lifetime, the famous British astrophysicist Professor Stephen Hawking (pictured) raised concerns about the dangers posed by intelligent and hostile extraterrestrials
During his lifetime, the famous British astrophysicist Professor Stephen Hawking raised concerns about the dangers posed by intelligent and hostile extraterrestrials, Dr Gallup points out.
These aliens might arrive to conquer, enslave, destroy, and colonise humans to exploit the resources of our planet having exhausted those of their own.
This has long been perpetuated by TV and film – for example, ‘Battlefield Earth’, a 2000 film based on a novel written by Scientology founder L. Ron Hubbard, depicts a brutal race of giant aliens called ‘The Psychlos’ subjecting humans to slave labour.
According to Professor Hawking, the outcome might be analogous to when Columbus came to America, which did not turn out well for Native Americans, Dr Gallup says.
But the truth could be completely the opposite – it might also be possible that aliens live in fear of being found.
Overall, humans are unique because ‘they have developed the technological capability to cause their own extinction’.
‘Humans appear to be poised at the brink of reaching the tipping point when it comes to our dependence on fossil fuels and the resulting effects on climate change,’ Dr Gallup says.
‘The trajectory suggests that for the first time in the history of Earth, we are headed for a mass extinction that is occurring as a result of the actions of a single species; i.e., human.’
In ‘Battlefield Earth (2000) a brutal race of giant aliens called ‘The Psychlos’ that have subjected humans to slave labour for 1,000 years
So far, astronomers have discovered more than 4,000 of exoplanets confirmed to be orbiting other stars in our galaxy. Pictured is an artist’s rendering of an exoplanet and its moon
The paper draws on the Fermi paradox, which is the apparent contradiction between the lack of evidence for extraterrestrial civilizations and various high estimates for their probability.
In other words, if there is extraterrestrial life, why have we not found any evidence for it?
According to estimates from Erik Zackrisson, an astrophysicist at Uppsala University in Sweden, there are 70 quintillion planets in the universe – that’s 7 followed by 20 zeroes.
In the Milky Way galaxy alone, there many as many as six billion Earth-like planets, according to a 2020 study by University of British Columbia astronomers.
According to NASA, some 4.933 exoplanets – planets outside our own solar system – have been confirmed in 3,704 systems.
The majority of these exoplanets are gaseous, like Jupiter or Neptune, rather than terrestrial, according to NASA’s online database.
As for whether intelligent life exists other than on Earth, Dr Gallup says: ‘The history of biology on Earth makes it clear that intelligent, technologically sophisticated life is the exception rather than the rule.
‘Despite billions of different lifeforms, the track record of intelligent life with complex tool-making capabilities and the cognitive ability to achieve self-consciousness, indicate that it has only appeared once, which makes the prospect of finding technologically sophisticated intelligent life elsewhere exponentially remote.’