Throughout most of Earth's history, an unimaginable expansion of the universe was visible in the night sky. But with increasing population and the corresponding growth of lighting, a light pollution has resulted. Light pollution has been blamed for wasting energy, disrupting wildlife behavior, and even damaging mental health. However, one scientist has now highlighted an overlooked aspect of this light pollution: Humanity may inadvertently send our presence to intelligent alien civilizations.
Radio signals have long been considered potentially accessible to civilizations that can detect radio waves, but light pollution emitted from Earth also enters space.
The question arises as to how far the life of aliens is spread and how it should be searched for.
This light pollution increases approximately with the population to increase by about one percent.
Dr. Jacco Van Loon of Keele University told Express.co.uk that this can boost both our presence and the search for alien life.
He said, "We are looking for ways to detect biosignatures ̵
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Alien life-seeking: Light pollution emanating from Earth also penetrates into space
" When these aliens are technologically advanced, they leave behind artificial signatures.
"You can think the other way around and with this principle we could search for someone else's life."  Earth's light output 100 years ago was probably one-third of today's.
In those 100 years, the light would have covered 100 light-years, and you can count how many stars are within 100 light-years. Van Loon.
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He said, "In this little band, it's pretty unlikely we One will find civilization as advanced as ours.
"We still strive to directly capture life in planets around other stars – we still can not do that for Earth-like planets in Earth-like orbit.
"But in the next few decades, it's quite likely that we'll be able to get started with it.
"It's within the realm of possibilities that technically advanced alien civilizations can do.
"But they must be close enough, because when they are 1000 light-years away, they will see the earth as it was 1000 years ago, and the earth was not illuminated with artificial light sources in the Middle Ages. "
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According to estimates, there are 10,000 stars in a radius of 100 light-years
Despite the high number, there may still be less than a technologically advanced civilization.
Dr. Van Loon said, "I would expect no more than some of 10,000."
"That may seem a bit pessimistic, but we have searched less than a century.
"But if you send out radiation, it just keeps going – there is no way to take it back.  READ MORE: NASA scientists on the verge of discovering time travel ?
The scientist agrees that we should follow the advice of Professor Stephen Hawking and avoid spreading our presence as often as possible.
He said, "It might be wise for it to be considered safe."
"Species that we are, are we risk carriers?
If we think about that, we're just thinking about the consequences in general.
"It may therefore be advisable to limit the loss of signals, as this has no use and is associated with risk."
Dr. Van Loon admits that he can not be sure that an intelligent alien life exists, but believes that it probably exists, "because it is harder to understand why this is not the case."  He said, "The question is how widespread is the life of aliens and how it should be looked for.
" We may be the only ones in the Milky Way, but there may be many, and there are many more reasons why we still have not noticed.
" But because of our own existence and the fact that life has evolved on Earth, it is very likely that Ha has also revealed it elsewhere. "