## Glider and Spaceship Guns

Dean found a very simple gun based on two p68 oscillators:
The p68 can also eat gliders, or turn them 180 or 90
degrees:

The timing of p68 glider streams turns out to be quite
convenient for many reactions, but if the p68 gun is not thin
enough, one can use these thinner guns:

Perhaps the most versatile gun is one with period 408, allowing
glider reactions to involve both p24 and p68 oscillators:

It is also possible, but more difficult, to base a gun on the
p24 oscillator alone. It seems likely that the following gun can be
modified to produce periods of the form 24**k* for all
sufficiently large values of *k*; the gun shown has *
k* = 9.

Three glider guns can be combined to form a 4c/10 spaceship
gun:

One can also use glider collisions to make a gun for the wide
2c/5 spaceship

and for the c/6 spaceship:

B35/S236 -- Cellular Automata -- D.
Eppstein -- UCI Inf. & Comp. Sci.