Silverfish
The silverfish is a 31c/240 orthogonal spaceship that was constructed on May 9, 2020.[1] Various reductions brought it down to its current size of 210,108 cells,[2] making it the smallest known spaceship of this speed, surpassing the centipede caterloopillar in cell count (and, as a result, making the smallest 31c/240 spaceship true-period again).
| Silverfish | |||||||||
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| Pattern type | Spaceship | ||||||||
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| Number of cells | 210108 | ||||||||
| Bounding box | 11974×45755 | ||||||||
| Direction | Orthogonal | ||||||||
| Period | 240 | ||||||||
| Mod | 240 | ||||||||
| Speed | 31c/240 | ||||||||
| Speed (unsimplified) | 31c/240 | ||||||||
| Heat | 125504 | ||||||||
| Discovered by | Chris Cain Dave Greene Adam P. Goucher Nathaniel Johnston | ||||||||
| Year of discovery | 2020 | ||||||||
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References
- Adam P. Goucher (May 9, 2020). Re: 31c/240 caterpillar working notes (discussion thread) at the ConwayLife.com forums
- Adam P. Goucher (June 14, 2020). Re: 31c/240 caterpillar working notes (discussion thread) at the ConwayLife.com forums
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