Summary: Our solar system features one star. There are many examples of binary star systems and even two binary stars coupled together. But astronomers have now found an incredibly rare new system. Two couples binary stars with one lonely companion star to make up a total of five stars.
Of the binaries, one is a detached pair and the other is coupled, meaning that the two stars share an outer atmosphere. Although there are no observations to prove it, it is possible that there are planets orbiting these stars. What a spectacular sky show they would have.
BBC News
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