With temperatures ranging from 1000 to 2000°C, gravity 15 times stronger than Earth's, and a year that lasts just 5.6 of our days, HAT-P-2b is not a planet you'd want to visit for vacation.
The unusual gas giant—located 440 light-years away in the constellation Hercules—turns out to be the most massive planet found outside our solar system so far.
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