Illustris Blueish Rings
I've noticed that Illustris provides quite a number of images like this, with irregular or ring-shaped formations with blue blobs forming the general structure of the ring. What should I assume they are? Galaxies with cores that aren't emitting much light? Dust cloud remnants of some explosion or other disturbing event?
by ElisabethB moderator
Hi Kaerea and welcome to the Zoo
The blue smudges in these Illustris images are active star forming areas in the galaxy.
Happy hunting! 😄