Just a week after their unprecedented return to Earth following a medical issue onboard the International Space Station, the ...

Cardiff astronomers say they don't yet know where iron bar detected inside the Ring Nebula came from.

Scientists are sharpening their forecasts for how long Earth can remain a comfortable home for complex organisms, and the latest work points to a much earlier cutoff than the classic textbook ...

Clouds play an important role in determining the current and future temperature and global warming rate of the Earth. They simultaneously cool the Earth by reflecting sunlight and warm the planet by ...