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Old October 17th 17, 03:19 PM posted to sci.astro.amateur
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Default Supernova and the birth of a solar system

On Monday, October 16, 2017 at 9:25:42 PM UTC+1, Gerald Kelleher wrote:
I was working on two large stellar rings with a smaller intersecting internal ring 4 years before one supernova was observed displaying them


....and then the crayon broke.