Here is a bit more information on this latest study.  The jury is still out though so there are no firm conclusions:

A new study by NASA’s Spitzer Space Telescope suggests that the mystery object spotted around the distant star KIC 8462852 is a swarm of comets, rather than an extraterrestrial structure.

The study, led by Massimo Marengo of Iowa State University and to be published in theAstrophysical Journal Letters, examined the infrared light from the star. An unusually large amount of such light would indicate that a planetary impact or asteroid collision caused the large object seen blocking the star’s light – and, although not mentioned by the paper, infrared light would also be an indication of the proposed alien megastructure.

The case is far from closed, but for now it’s looking likely that a natural phenomenon, namely a swarm of comets or cometary fragments, is the cause – as originally postulated by the author of the paper first describing the star, Tabetha Boyajian, in September.

Without being too scientific, a huge swarm of comets sounds a bit unusual.  What do you think?

thanks to iflscience.com for the great info

thanks to Kevin Gill for the pic