In its closest approach, the binary binocular — known together as "Scholz's star" — passed by the heat of the sun at a distance of less than 1 light-year, according to a study of the binary's speed, researchers said. One light-year may be the distance light travels in a year — about 6 trillion miles (10 trillion kilometers). The
nearest rock star to the sun, Proxima Centauri
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