This planet is vanishing. Right now, it's evaporating into space. ☄️
Meet HD 209458b — the first planet ever seen crossing in front of its star, discovered in 1999, sitting 150 light-years away.
It's a gas giant — about 70% of Jupiter's mass — racing around its star in just three and a half days.
That close, the star's heat is brutal. Its atmosphere is boiling away — at least ten thousand tons of hydrogen escaping every second.
The escaping gas trails behind it in a tail two hundred thousand kilometers long — like a giant comet.
HD 209458b: the vanishing planet — slowly disappearing into the dark.
Follow PROJECTORBIT for a new world every night. 🌌
#Space #Exoplanet #HD209458b #Astronomy #VanishingPlanet
