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Winking Star Turns Out to Be a Binary System - Universe Today
Astronomers have spent the last five years trying to explain a strange star called KH 15D, which winks on an off, sometimes with eclipses that last 24 hours. One theory is that there was a blob of protoplanetary material orbiting the star, occasionally blocking our view. By looking into historical images of the object, astronomers think they might have a new scenario that better explains their observations. They think it could be a double star system with a disk of material surrounding it and rotating with a wobble. This would explain the unusual eclipses.