A group of Italian astronomers may have detected the first planet outside our galaxy. Using a technique called pixel-lensing, they spotted an object about six times the mass of Jupiter around star M31 in the Andromeda Galaxy. This celestial body could be a brown dwarf or a huge planet.
Using a technique called Pixel-lensing, a group of astronomers in Italy may have detected a planet orbiting another star. But this planet is unique among the 300-plus exoplanets discovered so far, as it and its parent star are in another galaxy. The Andromeda Galaxy, to be exact. Technically, the star in M31 was found to have a companion about 6 times the mass of Jupiter, so it could be either a brown dwarf or a planet. But either way, this is a remarkable feat, to find an object of that size in another galaxy.