What the *fork* is going on in this galaxy?! It looks amazing but we still don't have an accepted theory for explaining how these rings form. Let me take you through a couple of our best ideas.
And whoops, had a brain typo halfway through this video. Hoag's object dimensions should be 17 thousand light years, 75 thousand light years and 125 thousand light years.
This video was inspired by a comment on this video: https://www.youtube.com/watch?v=NiiWXjPp2KM&t=21s
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I also present videos on Sixty Symbols: https://www.youtube.com/user/sixtysymbols
and Deep Sky Videos: https://www.youtube.com/user/DeepSkyVideos
Dr Becky Smethurst is a Junior Research Fellow at Christ Church at the University of Oxford.
http://drbecky.uk.com
