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This star isn't normal guys... there is SOMETHING there... million theories.. and the only one that DOESN'T completely fail is a Dyson Sphere. feel free to ignore it... but that won't stop that star from blinking at 22% drops..

option 1 - It's a swarm of comets ... fantastic levels of comets but still natural. option 2 - It's a dyson sphere under construction over the past 100+ years .. 1500 light years away. They have detected nothing from us in terms of radio waves or any modern technology. Our radio signals from the early 1900's are still traveling there, and will take another 1400 years to get there. IE: they don't care about a "civilization" that is 2 inches past monkey's throwing rocks. option 3 - They know we are here, they realize the potential, they are building a Dyson Sphere to power a Alcubierre drive .. they'll be here next week. https://en.wikipedia.org/wiki/Alcubierre_drive