I've read a number of articles and now I see why astronomers are REALLY scratching their heads. The varying lengths of the light levels dipping, and once even dipping 22% (!!!) defies all known styles of occultation. I can hardly wait until January when SETI points its radio telescope at it! John

http://www.seattlepi.com/science/article/Mystery-objects-block-light-from-distant-star-6571407.php