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Astronomers say they have discovered a distant planetary system with planets arranged in a surprising order, challenging long-standing ideas about how planets form. In our Solar System, the four ...

Add Yahoo as a preferred source to see more of our stories on Google. Artist impression of the planetary system with four planets,around a small red star,called LHS1903. Caption: Astronomers have long ...

Surprised astronomers said Thursday they have discovered a star with planets in a bizarre order that defies scientific expectations -- and suggests these faraway worlds formed in a manner never ...