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NASA, Using The Chandra X-Ray Telescope, May Have Discovered The First Exoplanet Outside Of Our Galaxy. The New Saturn-Sized Exoplanet Is Said To Be 28 Million Light-Years From Earth In The Messier 51 Galaxy. All Of The ~5000 Exoplanets Discovered Were Within The Milky Way. And Most Of Them Are Less Than 3,000 Light-Years From Earth.

Signs of first planet found outside our galaxy

https://www.yahoo.com/now/signs-first-planet-found-outside-191224869.html

Astronomers have found hints of what could be the first planet ever to be discovered outside our galaxy.