Signs of 1st possible planet outside our galaxy found: NASA

Researchers may have detected the signs of a planet transiting a star outside of the Milky Way for the first time, NASA revealed. The possible exoplanet is located in a binary system 'M51-ULS-1' in Messier 51 galaxy. The system contains a black hole or neutron star orbiting a companion star with a mass about 20 times that of the Sun.