This time-lapse video sequence of Hubble Space Telescope images reveals dramatic changes in a ring of material around the exploded star Supernova 1987A [video: buff.ly/2LXej9G]
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When the first few hot spots appeared, they followed a prime number sequence. I began to wonder if a civilization was signaling their existence. Unfortunately, the pattern didn’t hold. Then again, maybe it was better it didn’t.
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This animation represents about 1.5 years of time, omitting the first frame which is a legacy image from 2010. What you see here is the fading of the supernova, and then the blueish ring that is a light echo that began to propagate outwards immediately after the initial explosion
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