Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of stars are equally common. Physicists can now explain the dearth.

(CNN) — After decades of searching, astronomers have uncovered some of the strongest evidence yet of exoplanets orbiting Barnard’s Star, the nearest single star system to Earth. The four planets are ...

Astronomers have long faced a strange contradiction: most stars are born in pairs, and ...

Add Yahoo as a preferred source to see more of our stories on Google. This year, the Perseids meteor shower (typically the most impressive of the year) was washed out by a bright full Moon.

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In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and planetary masses silently orbit their stars — sometimes thousands of astronomical ...