Illustris Blueish Rings
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by Kaerea
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?
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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.
More info here : http://blog.galaxyzoo.org/2015/11/11/blue-stuff-in-the-illustris-galaxy-images/
Happy hunting! 😄
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