Identify shell galaxies

Shells in a nutshell

You might have seen the beautiful shell galaxy below in the Astronomy Picture of the Day and wondered how these shells are formed. I summarize our results in just 14 tweets (or press on the text in the tweet below). If you want to learn more, check our paper here. And try identifying a few shell galaxies at the bottom of the page before you leave!

Note that this page is under construction. Some features might not be available at this time.

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Does this galaxy have stellar shells?


No Shells

Other features than shells? You can identify them or leave us a comment here.