NASA’s Hubble Telescope has captured an image of a dwarf galaxy with a difference, with its irregularity marking it out.
Situated in Ursa Major – alongside the likes of the Pinwheel Galaxy and the Owl Nebula – UGC 4459 lacks any distinct shape or structure, according to NASA. By that, NASA means it’s neither a spiral extending from a central star, or a nuclear bulge of tightly-packed stars.
“Rich with young blue stars and older red stars, UGC 4459 has a stellar population of several billion,” explained NASA, which makes it a fraction of the size of our Milky Way.
Dwarf galaxies produce far fewer stars from their original gas than other types of galaxies, which astronomers use to learn the make-up of galaxies all over the universe.
It makes for quite the collection of Ursa Major images, thanks largely to the Hubble programme.