A Gas Giant Was Transformed Into an Earth-Sized Core With a Planetary Atmosphere

Scientists using NASA's Hubble Space Telescope just found evidence that an intriguing, rocky exoplanet called GJ 1132 b may have transformed from a gas giant into an Earth-sized core, and then amassed a second, planetary atmosphere from volcanic activity — according to a recent study shared on . This is the first detection of a "secondary atmosphere" beyond our solar system — and it could have substantial ramifications for other exoplanets.Hot magma gave this Earth-sized planet a second chance The planet orbits a red dwarf star 41 light-years from Earth, and — while it shows notable parallels to our planet — the differences are more gripping. This is a planet with a...