A new paper published in Nature features a hot Jupiter that beats most of the other weird worlds, WASP-121b, which orbits its sun roughly 900 light years away from us.
Science Daily gives us some details about this giant planet:
“WASP-121b has a greater mass and radius than Jupiter, making it much puffier.
The exoplanet orbits its host star every 1.3 days, and the two bodies are about as close as they can be to each other without the star's gravity ripping the planet apart. This close proximity also means that the top of the atmosphere is heated to a blazing hot 2,500 degrees Celsius -- the temperature at which iron exists in gas rather than solid form.”