It looks like the alien-megastructure theory might still be viable for a star’s dimness after the proposed comet-swarm theory was deemed mathematically implausible. The star in question, KIC8462852 has been showing irregularities in its brightness for over a century up to this point, while scientists struggled to come with a conclusive theory as to why this phenomenon occurs.
Its dimness has not been gradual, which would have meant that the star was going through normal life-span-related processes, showing spurts of brightness and dimness along the 100 year period since it has been studied. The comet-swarm theory was mathematically analyzed by researchers from the Louisiana State University until they came to the conclusion that it could not pe possible for it to exist.
In order for the known irregularities to be present, the comet-family needs to have over 600,000 members, each with a width of 125 miles. This idea was the most plausible when compared to the other concepts which were taken into account. But due to the fact that the number of large-sized comets required for this phenomenon to exist is immense, the comet theory was completely scrapped.
Although the theory that an alien structure may obstruct the star is still somewhat viable, researchers say that it is not entirely possible for it to exist, because said alien civilization needed to be capable of obscuring one-fifth of the star over the course of 100 years. This is because the dimming process, although presenting irregularities, has still been relatively gradual.
The star in question is actually fairly common in our universe, with a plethora of them having been discovered by our scientists. But KIC8462852 is the only one presenting this diminishing brightness phenomenon without any alteration to its surroundings. By using the Ockham’s Razor principle, which states how scientists will choose the hypothesis that has the least allegations possible, the only viable solution is an alien megastructure.
Even if this is the case, the existence of said structure is still relatively unlikely, from a mathematical point of view. True the diminishing brightness can up to this point only be attributed to a physical factor that simply obscures the star, but due to the fact that we cannot know exactly what happens out there, scientists and researchers are only left with concepts and theories.
A part of the general public may think that by showing how the alien-megastructure theory might still be viable for a star’s dimness, scientists are actually hinting at the likelihood of alien civilizations existing in outer space. But as the theory itself, everything up to this point can be assigned to the realm of allegations only, without any conclusive method of knowing why and how KIC8462852 is slowly losing its light.