This is going to be a long post, and it isn't close to done yet, but peer review and fact checking are welcome. Like all other posts here, it is distributed under the Creative Commons Attribution/Share-Alike License.
Last Update: 8 February 2016
When it comes to Tabby's Star, we are all perplexed, but this is for those who are disinclined to read technical papers by professional astronomers, but would like to know just what the heck is going on. What is all this stuff about alien megastructures, swarms of giant comets, and old photographic plates? We'll lay all that out here for you in non-technical terms (or we'll explain the terms as we go). Please, if there are any questions, ask in the comments below, and we'll try and figure out an answer, if there is one. The post is richly hyperlinked, so if you want more detail, you can easily find it. I hope I have given credit wherever it is due.
Let me start by stating up front, that no one knows exactly what is going on with this star. What we'll try to lay out here is why this otherwise ordinary star is strange.