There are two other ways in which queen bees can interact to form gliders, and a third queen bee can be used to reflect a glider and make a "pseudo-Gosper gun". See period-30 glider gun for more information.
A 13-glidersynthesis of the Gosper glider gun was found no later than February 1971, and was featured in Martin Gardner's second column on Conway's Game of Life after being submitted by Robert Wainwright. An 8-glider synthesis was later found, which remains the smallest known glider synthesis of any gun. It can be destroyed completely by 2 gliders, as shown below.