Could this be the remains of a supernova with a galaxy behind it?
by Budgieye moderator
Galaxies with rings are common, a fact discovered by Galaxy Zoo!
2.4 Ring galaxy (empty in the middle) collisional ring galaxy - created by collision that removed the inside of the galaxy) http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=2&comment_id=53d8b8340d43f77bd6000ffd
2.5 ringed galaxy (ring around a galaxy) and pseudo-ringed galaxy, created by resonance created by bars , nuclear rings http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=2&comment_id=53d8b864db90c70a2a000be2