Pre-pulsar spaceship
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| Pre-pulsar spaceship | |||||||
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| Pattern type | Spaceship | ||||||
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| Number of cells | 132 | ||||||
| Bounding box | 69 × 13 | ||||||
| Direction | Orthogonal | ||||||
| Period | 30 (mod: Unknown) | ||||||
| Speed | c/5 | Unknown | ||||||
| Heat | 131.9 | ||||||
| Kinetic symmetry | Unspecified | ||||||
| Discovered by | David Bell | ||||||
| Year of discovery | 1998 | ||||||
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Pre-pulsar spaceship (or PPS for short) is any of three different period 30 c/5 orthogonal spaceships in which a pre-pulsar is pushed by a pair of spiders. The back sparks of these spaceships can be used to perturb gliders in many different ways, allowing the easy construction of c/5 puffers.
The first pre-pulsar spaceship, the symmetric pre-pulsar spaceship (or SPPS for short) was found by David Bell in May 1998 and was based on a period 15 pre-pulsar spaceship found by Noam Elkies in December 1997.
Image gallery
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External links
- Pre-pulsar spaceship at the Life Lexicon
Categories:
- Patterns
- Spaceships with between 130 and 139 cells
- Periodic objects with minimum population between 130 and 139
- Patterns with between 130 and 139 cells
- Patterns found by David Bell
- Patterns found in 1998
- Spaceships
- Spaceships with period 30
- Orthogonal spaceships
- Spaceships with speed c/5
- Spaceships with heat between 130 and 139