This year’s Earth Hour also served as a stark reminder of the twin crises we face—climate change and nature loss. Nature is disappearing at an alarming rate, and this past year was officially the hottest on record, marking the end of the hottest decade ...

When astronomers announced Kepler-452b, they were not just adding another distant world to a growing catalog. They were pointing to a planet that orbits a star much like our own, in a region where liquid water could plausibly exist, and that looks ...

Astronomers spotted a potential Earth-size rocky world orbiting a white dwarf, suggesting a future in which our planet outlives its star. By Jonathan O’Callaghan In six billion years the sun will expand into a red giant. That process should consume ...

NASA has confirmed over 5,780 worlds beyond our solar system, called exoplanets. But it's rare to detect a juvenile, still-maturing planet, because they inhabit chaotic systems that are flush with obscuring dust and gas. By chance, this distant debris has ...