(CNN) – A new image from NASA’s Hubble Space Telescope shows what is nicknamed “The Bullseye.” Its real name is Gargantuan ...

So-called ring galaxies are extremely rare in the Universe, and they are thought to be the result of a very specific set of circumstances. Although space is mostly empty, galaxies are drawn together ...

NASA says the "bullseye" galaxy is two and a half times the diameter of the Milky Way galaxy.