Found 120 light-years away from Earth in the constellation of Leo, the K2-18b planet is causing ripples among scientists. Twice the size of the Earth, the planet orbits the habitable zone of its star ...

An international team of researches has announced the discovery of a super-Earth exoplanet (designated GJ 251 c) situated in its host star’s habitable zone less than 20 light-years from our own. What ...

New discoveries and fresh looks at familiar worlds show how far exoplanet science has come — and how much remains unknown. When you purchase through links on our site, we may earn an affiliate ...