(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 ...

The dwarf irregular galaxy NGC 4214 resides about 10 million light-years away. The galaxy’s relative proximity, combined with the wide variety of evolutionary stages among its stars. This image from ...