KELT-9b
KELT-9b is one of the hottest planets ever discovered. It orbits a blue A-type star that is literally too hot for the poor planet, where temperatures reach up to 7,800 degrees Fahrenheit. All that heat is causing the planet’s mass to melt and evaporate away, meaning that in a few million years (a short time in the life of a planet), KELT-9b will disappear entirely.