Planets outside the Milky Way
Exoplanets are planets outside the Solar System. NASA’s Kepler Space Telescope and some other terrestrial telescopes have detected many such aliens. As of February 1, 2020, 3900 extraterrestrials have been confirmed in 2894 planetary families. But all of these planets revolve around stars in our parent galaxy, the Milky Way. In May 2018, astronomers at…