An international team of astronomers has identified a rare, potentially habitable super-Earth just 19.5 light-years from Earth. Named GJ 251 c, the planet orbits within the habitable zone of its ...

Global terrestrial biodiversity hotspots are among the most ecologically important regions on Earth. These 36 regions, which ...

Astronomers at MIT, Harvard University, and elsewhere have searched a rocky, Earth-sized exoplanet for signs of an atmosphere—and found none.