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. Of the more ...

When you hear about planetary transits and movements, it might sound complicated, but it doesn’t have to be. The planets are always moving, and just like the moon affects the tides, these celestial ...

A step-by-step explanation for why planets that orbit a double star eventually enter an unstable orbit and disappear from the system. Of the more than 4,500 stars known to have planets, one puzzling ...