![]() ![]() It has just half the mass of Earth but is slightly larger than Mars with a diameter of 5,500 miles. ![]() The planet, called GJ 367 b, is smaller than most exoplanets discovered so far, which tend to be comparable in size to Jupiter. And the planet is bombarded with radiation that is over 500 times stronger than the radiation on Earth. Its host star, located relatively nearby at 31 light-years’ distance, is a red dwarf which is smaller and cooler than our sun, but even so, the planet is so close that its surface temperature could reach up to 2,700 degrees Fahrenheit. ![]() Fitbit Versa 3Īstronomers from the German Aerospace Center Institute of Planetary Research have discovered a terrifying planet: Smaller than Earth and so close to its star that it completes an orbit in just eight hours.
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