Comparison of WASP-121b stratosphere with brown dwarf atmosphere
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.
NASA, ESA, and A. Feild (STScI)
About the Image
|Release date:||3 August 2017, 11:24|
|Size:||2500 x 2496 px|