Kok's galaxy
From LifeWiki
Kok's galaxy  
View animated image  
View static image  
Pattern type  Oscillator  

Number of cells  28  
Bounding box  13×13  
Period  8  
Mod  8  
Heat  39  
Volatility  1.00  
Strict volatility  1.00  
Discovered by  Jan Kok  
Year of discovery  1971  
 
 
 

Kok's galaxy is a period 8 oscillator found by Jan Kok in 1971. It is notable for its uses as a sparker, and can be seen acting as one in the "converter 1" found in this gun. In September 2003 Jason Summers found a 12glider synthesis of this oscillator.^{[1]}
It is notable for its uses as a sparker, as seen below:
A p120 HWSS gun using Kok's galaxy and two Simkin glider guns. (click above to open LifeViewer) RLE: here Plaintext: here 
Kok's galaxy serves as the logo of Golly.
See also
References
 ↑ Jason Summers' jslife pattern collection.
External links
 Kok's galaxy at the Life Lexicon
 Kok's galaxy at Adam P. Goucher's Catagolue
 28P8.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
 Patterns
 Oscillators with 28 cells
 Patterns with 28 cells
 Patterns found by Jan Kok
 Patterns found in 1971
 Patterns that can be constructed with 11 gliders
 Oscillators
 Periodic objects with minimum population 28
 Oscillators with period 8
 Oscillators with mod 8
 Oscillators with heat 39
 Oscillators with volatility 1.00
 Oscillators with strict volatility 1.00
 Patterns with 90degree rotation symmetry
 Sparkers
 Sparkers with period 8
 Strong sparkers
 Dot sparkers