Thursday, 3 August 2017

Glowing water molecules indicate exoplanet may have a stratosphere

WASP-121b's atmosphere is so hot that water molecules glow

A planet with an atmosphere where water molecules glow is the strongest evidence yet of the first stratosphere discovered on a world outside the Solar System. Using data from NASA's Hubble Space Telescope, an international team of scientists led by the University of Exeter has found that the upper atmosphere of exoplanet WASP-121b is as hot as boiling iron, indicating that it's stratified in a manner similar to Earth.

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