Relevant video is here. If you'd like to skip the logic and jump straight to the conclusions/hypotheses it's at 6:05. This is all based on very new data and so, assuming everything is as it seems, we should be seeing a slew of papers in the very near future.
The big points:
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Whatever is surrounding the star is something nontransparent and consistent throughout - perhaps solid.
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The dimming is accelerating, which suggests that whatever is around the star is expanding.
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The author predicts the star will become completely undetectable within 14 years at the current rate.
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It is probable that the short term dimming events from the star are connected to the long term events and may be connected to buildup of whatever is slowly surrounding the star.
Really really incredible stuff. If you're not reading between the lines - the evidence is starting to make it increasingly difficult to come up with any hypothesis other than a Dyson Sphere. The implications of stars being able to be somehow masked out of detection is also rather huge. Anyhow, was pleasant surprised to find this when searching for the latest batch of papers following the late May dimming. Should be some fun stuff coming up!
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[–] rwbj [S] 0 points 1 point 1 point (+1|-0) ago
Same issues there. Asteroid collisions would be creating dust which would be resulting in wavelength differentials. Said collisions would also result in heat which would result in a visible increase in the infrared - also not there. There's lots of other issues as well which led to its doubt even just using older data, but I think those alone sufficiently remove it from the picture.