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The Best Way to Find Aliens on Other Worlds May Be to Search For Signs of Their Smog

The Best Way to Find Aliens on Other Worlds May Be to Search For Signs of Their Smog
14 FEBRUARY 2021
The Universe is a big place, so scientists are keen to narrow down their search for alien life – maybe by looking for radio signals, or hospitable climates, or huge megastructures. Now another sign of alien life is under consideration: atmospheric pollution.

If there are alien civilisations out there, the hypothesis goes, then their activities and industries may have produced pollution just like ours have. That pollution could be something we could spot in our scans of deep space.
A new study suggests nitrogen dioxide gas (NO2) could indicate life on other planets: It can be produced from burning fossil fuels, as well as from lighting, volcanoes, and other biological, non-industrial sources. ....

Giada Arney , Ravi Kopparapu , Jacob Haqq Misra , Goddard Space Flight Center , Blue Marble Institute Of Science , Space Flight , James Webb Space Telescope , Blue Marble Institute , Astrophysical Journal , Eno 2 , Amp Quot , ஜாகோப் ஹக் மிஸ்ரா , கோடார்ட் இடம் விமானம் மையம் , நீலம் பளிங்கு நிறுவனம் ஆஃப் அறிவியல் , இடம் விமானம் , ஜேம்ஸ் வலை இடம் தொலைநோக்கி , நீலம் பளிங்கு நிறுவனம் , வானியற்பியல் இதழ் ,

NASA Says Nitrogen Dioxide May Lead to Alien Discovery

Ravi Kopparapu, who works at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and is the lead author of the study, explained this further, “On Earth, most of the nitrogen dioxide is emitted from human activity combustion processes such as vehicle emissions and fossil-fueled power plants,” adding, “In the lower atmosphere (about 10 to 15 kilometers or around 6.2 to 9.3 miles), NO2 from human activities dominate compared to non-human sources. Therefore, observing NO2 on a habitable planet could potentially indicate the presence of an industrialized civilization.”
With more than 4,000 exoplanets found so far, experts are eager to find out if any of them host other civilizations but since they are so far away from us, the only way we can search for signs of life is with powerful telescopes that can find out what’s in their atmospheres. ....

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NASA says we should search for aliens by looking for their pollution

NASA says we should search for aliens by looking for their pollution
New research funded by the space agency suggests next-generation telescopes might be able to see the emissions of far-flung smokestacks.
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In this artist s illustration, the colors of an exoplanet are exaggerated to show industrial pollution, which otherwise isn t visible.
NASA/Jay Freidlander
We know the galaxy is home to plenty of potentially habitable exoplanets, but to determine whether anything is actually living on these worlds scientists hope to spot some sign of life, a so-called biosignature or technosignature. New research out of NASA s Goddard Space Flight Center in Maryland suggests searching for alien pollution as one such indicator. ....

United States , Goddard Space Flight Center , Giada Arney , Jacob Haqq Misra , Goddard Ravi Kopparapu , Jay Freidlander , Blue Marble Institute Of Science , Space Flight Center , Ravi Kopparapu , Marble Institute , Webb Space Telescope , Eno 2 , ஒன்றுபட்டது மாநிலங்களில் , கோடார்ட் இடம் விமானம் மையம் , ஜாகோப் ஹக் மிஸ்ரா , நீலம் பளிங்கு நிறுவனம் ஆஃப் அறிவியல் , இடம் விமானம் மையம் , பளிங்கு நிறுவனம் , வலை இடம் தொலைநோக்கி , குளிர்சாதன பெட்டி ,

Atmospheric pollution could be the sign of advanced extraterrestrial civilization

Atmospheric pollution could be the sign of advanced extraterrestrial civilization
This study is the first time pollution has been examined as a possible technosignature.
Artist’s illustration of a technologically advanced exoplanet. The colors are exaggerated to show the industrial pollution, which otherwise is not visible.
Credits: NASA/Jay Freidlander
Nitrogen dioxide is part of a group of gaseous air pollutants produced due to road traffic and other fossil fuel combustion processes. In the lower atmosphere (about 10 to 15 kilometers or around 6.2 to 9.3 miles), NO2 from human activities dominate compared to non-human sources. Therefore, observing NO2 on a habitable planet could potentially indicate the presence of industrialized civilization. ....

United States , Giada Arney , Ravi Kopparapu , Jacob Haqq Misra , Alpha Centauri , Astrobiology Institute , Signature Of Extraterrestrial Technology , Astrobiology Program , Blue Marble Institute Of Science , Planetary Science Division Research Program , Virtual Planetary Laboratory , Blue Marble Institute , Space Telescope , Deep Field , Sellers Exoplanet Environments Collaboration , Science Division , Planetary Laboratory , Exoplanet System Science , Dioxide Pollution , ஒன்றுபட்டது மாநிலங்களில் , ஜாகோப் ஹக் மிஸ்ரா , ஆல்பா செண்ட Au ரி , கையொப்பம் ஆஃப் வேற்று கிரக தொழில்நுட்பம் , நீலம் பளிங்கு நிறுவனம் ஆஃப் அறிவியல் , கிரகங்கள் அறிவியல் பிரிவு ஆராய்ச்சி ப்ரோக்ர்யாம் , மெய்நிகர் கிரகங்கள் ஆய்வகம் ,