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quuxplusone
8 days ago
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1D Conway's Life glider found, 3.7B cells long
IIUC, "smoke" is ephemeral by definition. A spaceship/glider that leaves persistent "debris" in its wake is called a "puffer":
https://conwaylife.com/wiki/puffer
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Search:
https://conwaylife.com/wiki/puffer