The first signs of a potential new planet outside the Milky Way have been spotted by NASA in the Chandra X-ray Observatory.
A study published yesterday in Nature Astronomy by US astronomers reported 'bold' evidence of a new planet that would be the first planet seen to orbit a star outside our galaxy.The sighting was located in Messier 51 (M51), also called the Whirlpool Galaxy.Astronomers have already found all exoplanets in the Milky Way, in other words, planets outside our solar system but in the same galaxy.
Thus, a planet outside the Milky Way is a discovery of a much greater scale.NASA says an exoplanet in M51 would be about 28 million lightyears away.That means it would be thousands of times farther away than exoplanets in the Milky
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