A hidden exoplanet named Kepler-139f was discovered by the NASA scientists in the Kepler-139 star system. The uncovered exoplanet is a massive “super-Earth,” roughly twice the mass of Neptune and ...

Enormous numbers of marine and land-based plants and animals died, ecosystems collapsed and oceans acidified. What has been less clear, however, is why it got so hot and why “super greenhouse” ...

Scientists have confirmed a potentially habitable fifth planet in the nearby L 98-59 system, revealing a diverse collection ...