Ultrahot Jupiters, an extreme class of planets not found in our Solar System, provide a unique window into atmospheric processes. Using four telescope units of ESO’s Very Large Telescope, astronomers have now probed deep inside the atmosphere of the ultrahot-Jupiter exoplanet WASP-121b and revealed distinct powerful winds in separate layers, forming a map of the atmosphere’s 3D structure. This diagram shows the structure and motion of the atmosphere...
