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There's a prosaic explanation for at least some of the weirdness of "Tabby's star," it would appear. The bizarre long-term dimming of Tabby's star — also known as

By Mike Wall Space.com 10-4-17

Boyajian's star, or, more formally, KIC 8462852 — is likely caused by dust, not a giant network of solar panels or any other "megastructure" built by advanced aliens, a new study suggests.

Astronomers came to this conclusion after noticing that this dimming was more pronounced in ultraviolet (UV) than infrared light. Any object bigger than a dust grain would cause uniform dimming across all wavelengths, study team members said.
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“This pretty much rules out the alien megastructure theory, as that could not explain the wavelength-dependent dimming.”

“We found that from UV, throughout the visible spectrum, to IR, the star is dimming at every wavelength we monitored,” said Dr. Meng. “It cannot be anything from the interstellar medium. Only microscopic fine-dust screens are able to scatter the starlight in the way characterized by measurements.”

KIC 8462852 probably sounds like a string of random letters and numbers to you but I'm willing to bet if you've watched this channel long enough, you've heard it before. It's the name of a star, also

By Seeker 8-1-17

known as Tabby's Star, and it set the internet ablaze a couple years back when it dimmed in ways nobody could really explain, unless you pinned it on aliens building massive structures to power their civilization.

However, since then we haven't seen the star's light fade, and so public interest in it did. But in April of 2017, light levels started dropping again, giving astronomers new clues to come up with new ideas. Are any more compelling than a giant energy-harvesting megastructure built by aliens? I'll let you be the judge of that.
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