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LiveScience
LiveScience
Harry Baker

James Webb telescope reveals rare, 'rotten egg' atmosphere around nearby hell planet

Artist's interpretation of a blue gas giant exoplanet very close to a sun-like star.

A hellish "hot Jupiter" planet situated relatively close to Earth would likely smell like rotten eggs if we ever made the trip to visit it, new data from the James Webb Space Telescope (JWST) reveals. 

HD 189733 b is a gas giant located around 64 light-years away in the Vulpecula constellation. It orbits extremely close to its home star — around 13 times closer than Mercury orbits the sun — and completes one orbit every two days. As a result, the exoplanet's surface can reach a scorching-hot 1,700 degrees Fahrenheit (925 degrees Celsius) — hot enough to melt certain types of rocks into magma.

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