What new methods can be used to find long-period exoplanets, or exoplanets with orbits lasting from months to decades? This is what a recent study published in The Astronomical Journal hopes to ...

Relative sizes of the newly discovered habitable-zone planets and Earth. Left to right: Kepler-69c, Kepler-62e, Kepler-62f and Earth (except for Earth, these are artists' renditions). Image credit: ...

Astronomers have discovered a potentially habitable new planet that is around 146 light-years away and is actually remarkably similar to Earth with just one stark difference: it could be colder than ...

A new investigation into old Kepler data has revealed that a planetary system once thought to house zero planets actually has two planets that orbit their star in a unique style, like an old-fashioned ...