Photographs of planets can fool you. A close crop of swirling cloud bands or a patch of rusty dust can look like almost anything, and many of us only recognize a planet when we see the whole disk ...

Astronomers now estimate there is at least one planet for every star in our galaxy. These worlds, called exoplanets, are planets that orbit stars outside our solar system. But new research from ...

Astronomers know that planets can exist in double – or binary – star systems, where two stars orbit each other. Typically, the planets orbit either one of the stars or loop around both in a larger ...

As far-fetched as it may seem, quirks of orbital mechanics could allow hundreds of planets to be packed around a star ...