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Astronomer suggests shooting a laser in space to attract foreigners to the ground like a “porch light” – BGR

Science fiction has taught us for decades that when strangers arrive on earth, it will be a bad day for…

Science fiction has taught us for decades that when strangers arrive on earth, it will be a bad day for humanity. The fictional horror stories have not discouraged any scientists from thinking about ways we could attract foreign civilizations to the earth, and a new feasibility study suggests that we could send a laser beam to the cosmos to serve as a lighthouse for foreign life to find.

The work, published in The Astrophysical Journal proposes that existing technologies could be used to produce an infrared beam that is sufficiently light to be detected by intelligent foreign civilizations. Once discovered, it would be like a breadmobile trail just pointing back to earth, and aliens could call.

“This would be a challenging project but not an impossible,” said James Clark, author of the study. a statement. “The types of lasers and telescopes built today can produce a detectable signal so that an astronomer can take a look at our star and immediately see something unusual about his spectrum. I do not know if intelligent creatures around the sun would be their first guess, but it would really attract further attention. “

The biggest challenge to creating a lighthouse seen by aliens makes it deep enough to be discovered from a long distance, even with the sun doing its best to brag it. The paper explains that a 1

to 2-megawatt laser can be sufficient if it is pushed through a telescope as large as 45 meters.

Now feasibility aside There are ample voices in the scientific community that are not all the hassle of the idea of ​​meeting foreigners in the first place. Discovering intelligent life outside of the world would be a monumental event, of course, but the potential consequences of inviting a space-rich race to earth are potentially risky. There is legitimate concern that the Earth’s resources can be too tempting to resist, and that we can invite our own extinction by attracting aliens to our neck in the forest.

It is important to note here that there are no concrete plans to put such “Veranda light” into action. Man has sent probes with directions to Earth in interstellar space already, hoping for something to find the spacecraft and take a road trip to our planet. Eventually something can find us either through one of these means or by chance. Let’s just hope they are in a good mood when they do it.


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