"It might be aliens."

Astronomers still baffled by weird star

#Space

Sun, Jan 17th, 2016 11:00 by capnasty NEWS

A strange star that seems to be surrounded by what have been defined as "alien megastructures" is still leaving astronomers baffled as to what it might actually be since it can't possibly be comets.

Schaefer saw the same century-long dimming in his manual readings, and calculated that it would require 648,000 comets, each 200 kilometres wide, to have passed by the star – completely implausible, he says. “The comet-family idea was reasonably put forth as the best of the proposals, even while acknowledging that they all were a poor lot,” he says. “But now we have a refutation of the idea, and indeed, of all published ideas.”

“This presents some trouble for the comet hypothesis,” says Boyajian. “We need more data through continuous monitoring to figure out what is going on.”

What about those alien megastructures? Schafer is unconvinced. “The alien-megastructure idea runs wrong with my new observations,” he says, as he thinks even advanced aliens wouldn’t be able to build something capable of covering a fifth of a star in just a century. [...]

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