Galaxy Zoo Talk
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Posted August 26, 2014 6:10 PM
Looks like a green chrysanthemum. Seems to have protruberances, or prominances, all around. Interesting zig-zag features at 2 to 4 o'clock.
Posted September 22, 2014 5:30 AM
see discussion in Science. Protuberances are artifacts of pixellation.
Posted September 22, 2014 7:19 AM