Revision as of 18:20, 15 May 2009 by Nathaniel(talk | contribs)(New page: __NOTOC__{{Gun|p=144|name=Gunstar|pname=gunstar|c=736|bx=149|by=149|discoverer=David Buckingham|discoveryear=1990|life105=true|life106=true|plaintext=true|rle=true|animated=true}} A '''gun...)
A gunstar is any of a series of four-barreled glider guns of period 144 + 72n (n ≥ 0) that were constructed by David Buckingham in 1990 based on his transparent block reaction and Robert Wainwright's period 72 oscillator "47P72". Two copies of the oscillator together with a blocker and two eater 1s can duplicate a glider. One output glider emerges in the same direction as the original; the other is turned 90 degrees. By putting together 4 such reflectors, a 4-barrelled gun can be constructed.
The version to the right is the "first" such gun, with a period of 144. The next such gun, with a period of 216, is shown below.[1]
