Imagine a world where the clouds are made of metal and liquid rubies and sapphires rain down from the sky. A new study shows that, on the hot Jupiter exoplanet WASP-121 b, this could be the reality.

Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto. Make the ...

Over a trillion exoplanets likely orbit distant stars in our humble galaxy. Astronomers suspect one, 855 light-years away, harbors metallic clouds and raining gems. This peculiar world, WASP-121 b is ...

Ultra-hot Jupiters — named as such because of their physical similarities to the planet Jupiter — are exoplanets that orbit stars other than the sun with temperatures so high that the molecules in ...

Hot and cold: artist's impression of the exoplanet WASP-121b and its host star. (Courtesy: NASA, ESA, and G Bacon (STSci)) Liquid metal, ruby and sapphire could rain down on one hemisphere of a ...