Comparison of WASP-121b Stratosphere with Brown Dwarf Atmosphere

Comparison of WASP-121b Stratosphere with Brown Dwarf Atmosphere

About this image

This diagram presents evidence for the existence of a stratosphere on a planet orbiting another star. As on Earth, the stratosphere increases in temperature with altitude. The water emissions from the Jupiter-sized planet's upper atmosphere show this. The results are in marked contrast to the spectrum of a failed star, a brown dwarf, which shows water absorption because the atmosphere is cooling with altitude increase.


Tags
Annotated, Artwork, Data, Extrasolar Planets, Hubble Telescope

Credits

Illustration: NASA, ESA, and A. Feild (STScI)