A faraway star in the southern sky is flickering in an odd manner that suggests a bizarre cloud of material—or something even stranger—is in orbit around it. Discovered by astronomers using a telescope in Chile, the star is reminiscent of two other enigmatic astrophysical objects, one thought to harbor a planet with rings 200 times larger than those of Saturn, the other most famous for the remote possibility it is encircled by “alien megastructures.” The newfound star may help shed some light on one or both of these puzzling objects.
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