The current data from the Kepler Space Telescope captured a Star (KIC 8462852) with unique changes in brightness, possibly from some large irregular orbiting objects. There is apparently no good idea for what is really going on. Flying around the web are rumors of proof of space Aliens.
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The Atlantic (excerpt)
And yet, there is this mess of objects circling it. A mess big enough to block a substantial number of photons that would have otherwise beamed into the tube of the Kepler Space Telescope. If blind nature deposited this mess around the star, it must have done so recently. Otherwise, it would be gone by now. Gravity would have consolidated it, or it would have been sucked into the star and swallowed, after a brief fiery splash.
“It looked like the kind of thing you might expect an alien civilization to build.”
=====> The Atlantic Article here
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Also - a paper from Arxiv:
Planet Hunters X. KIC 8462852 - Where's the Flux? (T. S. Boyajian, D. M. LaCourse, S. A. Rappaport, et al.)
Over the duration of the Kepler mission, KIC 8462852 was observed to undergo irregularly shaped, aperiodic dips in flux down to below the 20% level. The dipping activity can last for between 5 and 80 days. We characterize the object with high-resolution spectroscopy, spectral energy distribution fitting, and Fourier analyses of the Kepler light curve. We determine that KIC 8462852 is a main-sequence F3 V/IV star, with a rotation period ~ 88 d, that exhibits no significant IR excess. In this paper, we describe various scenarios to explain the mysterious events in the Kepler light curve, most of which have problems explaining the data in hand. By considering the observational constraints on dust clumps orbiting a normal main-sequence star, we conclude that the scenario most consistent with the data in hand is the passage of a family of exocomet fragments, all of which are associated with a single previous breakup event. We discuss the necessity of future observations to help interpret the system.