It's not aliens

Once more, it's not aliens. (I keep holding out for aliens. Give me some aliens).

Scientists are now pretty sure that Tabby's Star is not surrounded by a Dyson's sphere. The lead theory now is space dust - space dust which preferentially absorbs blue light for some reason.

Hrm.

Truth is, we're only pretty sure it's not aliens. What we are sure is that something very strange is going on with that star. We like the more plausible explanations, but given we haven't encountered anything like it, maybe it's something weirder.

Like, say, an orbiting black hole.

Or aliens.

I'm holding out for aliens.