Tylos (or WASP-121b) is a gaseous, giant exoplanet located some 900 light-years away in the constellation Puppis. Using the ESPRESSO instrument on ESO’s Very Large Telescope (VLT), scientists ...

"Even the strongest hurricanes in the solar system seem calm in comparison." WASP-121 b is the definition of an "extreme" exoplanet — it's so hot that it rains droplets of liquid iron.

Astronomers have detected over 5,800 confirmed exoplanets. One extreme class is ultra-hot Jupiters, of particular interest because they can provide a unique window into planetary atmospheric dynamics.