c/7 orthogonal

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c/7 orthogonal
Spaceship Yes
Puffer Yes
Rake Yes
Wickstretcher No
Gun Yes

c/7 orthogonal is an orthogonal speed that is equivalent to one seventh of the speed of light.


On February 17, 2013 Josh Ball discovered the first c/7 orthogonal spaceship, the loafer.

Using caterloopillar technology, Michael Simkin constructed a c/7 orthogonal ship on April 16, 2016.[1]

On February 4, 2017, Matthias Merzenich discovered 339P7H1V0, a large p7 width-19 bilaterally-symmetric c/7 orthogonal spaceship. These ships can be chained by nontrivial spark interactions to produce an infinite number of distinct c/7 orthogonal spaceships.[2]


Loafer can be synthesized from 8 gliders, allowing the construction of guns.[3]

See also


  1. Michael Simkin (April 16, 2016). "Re: Caterloopillar WIP (all speeds < c/4)". Retrieved on April 16, 2016.
  2. Matthias Merzenich (July 26, 2019). "Re: Spaceship Discussion Thread". Retrieved on July 26, 2019.
  3. Shannon Omick (February 18, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums

External links