It has been dubbed the most mysterious star in the galaxy. The star, more than 1,200 light-years away in the constellation Cygnus the Swan, flickers and dims in a way never seen before. The starlight dips in an irregular pattern, suggesting that something is intermittently blocking the star. Researchers have proposed a myriad of explanations, including black holes, comet swarms, and interstellar clouds. But a conclusive answer remains elusive. And one hypothesis in particular has raised eyebrows: aliens.
http://www.bbc.com/earth/story/20170512-the-most-mysterious-star-in-the-galaxy
