It turned out that `` 100 stars suddenly disappeared '', and it could be evidence of extraterrestrial life forms
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A study comparing 20th century astronomical observations with 21st century new astronomical observations revealed that as many as 100 stars disappeared in just a few decades. Researchers do not rule out the possibility of 'a trace of some activity by extraterrestrial intelligent life', although there is a possibility of disappearance due to natural phenomena and misobservation.
The Vanishing and Appearing Sources during a Century of Observations Project. I. USNO Objects Missing in Modern Sky Surveys and Follow-up Observations of a 'Missing Star'-IOPscience
https://iopscience.iop.org/article/10.3847/1538-3881/ab570f
Weird 'Vanishing Stars' Could Potentially Be Aliens, Study Claims
https://gizmodo.com/weird-vanishing-stars-could-potentially-be-aliens-st-1840486666
Nordic Institute for Theoretical Physics of the astrophysicist a is Beatriz Villarroel and his Spanish Canary Astrophysics Institute research team looks for a suddenly lost or emerging star in the vicinity of the Earth from the historical observation data, ' Vanishing & Appearing Sources during a Century of Observations (VASCO)
The VASCO research team that started in 2017 said, “There is no known physical process in which a star suddenly disappears unless the star is sucked directly into the black hole. If the star suddenly disappears for reasons other than black holes, , This will be interesting for attempts to explore signs of unknown astronomical phenomena and advanced civilizations. '
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The research team compared and analyzed astronomical observation data collected in the 20th century, in particular the data observed by the US Naval Observatory , and the data of the Panstars Project, which began observations in 2008. From the 600 million objects recorded in the observation data, the research team found 151,1931 objects that were recorded in the old observation data but not recorded in the latest observation data That.
However, a more detailed analysis of the newly discovered “things that seemed to have suddenly disappeared” by the research team revealed that most of these were due to lens contamination and visual error. Still, the case was not able to give a brief description with respect to approximately 100 objects, the research team these objects 'red transients (red sudden celestial was named)'.
The 100 objects tend to be very red in color, and are characterized by moving across the entire field of view much more than a typical celestial body. According to the research team, the possibility of an asteroid, a fast moving star, or just a star disappearing from sight has already been ruled out.
Generally, a massive star that emits light will eventually disappear as a white dwarf or when a supernova explosion occurs. However, the 100 missing objects discovered this time seem to have no evidence of disappearance due to these natural phenomena at the time of article creation. There is also a very low possibility that the celestial body was sucked into a black hole, but the probability of encountering a star sucked into a black hole during the VASCO survey seems to be negligibly low.
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Interestingly, the research team also discusses “possibility that lost objects may be due to extraterrestrial intelligent life forms” in the current status report of the VASCO project published in the Astronomical Journal . The research team considers the possibility of the red object as a powerful laser beam used for interstellar communication, or the thermal waste of the `` Dyson sphere '' that extracts energy from the star, but extraordinarily extraterrestrial knowledge He pointed out that it should refrain from increasing the possibility of a lifelike creature.
“It's clear that none of the“ disappeared objects ”discovered this time show any direct signs of extraterrestrial intellectual life. I believe this is the reason, 'said Martin López Corredoira of the Canary Institute for Astrophysics, co-author of the paper.
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