Radioactive evidence of a planet orbiting mid-transit outside our galaxy may have been spotted for the first time, NASA reports on Monday. Reflected optics courtesy of the Chandra X-ray Observatory (CXO) found an exoplanet candidate in a binary system located in the Messier 51 (or “Whirlpool”) galaxy 28 million light-years away. The celestial body in question is twice the size of Saturn, circling its designated star system at about twice the distance of Saturn from our Sun.
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