The exoplanet in question is WASP-121b, also known as Tylos. Considered an "ultra-hot Jupiter," this gas giant orbits very close to its star, resulting in an average surface temperature of 4,600 ...

This diagram shows the structure and motion of the atmosphere of the exoplanet Tylos (WASP-121b). The exoplanet is shown from above in this figure, looking at one of its poles. ESO/M. Kornmesser ...