This week's featured article

The queen bee shuttle is a period 30 oscillator in which a queen bee travels back and forth between two stabilizing ends. The shuttles were originally stabilized against one another in a square of eight shuttles, though there are now a number of known ways to stabilize the ends. Some simple methods of stabilization involve blocks; for a method involving an eater 1 see buckaroo. The queen bee shuttle is the basis of all known true period 30 guns (including the infamous Gosper glider gun). It was found by Bill Gosper in 1970 and was the first period 30 oscillator to be found. It is the smallest known oscillator with period greater than 15 and about the 18th most common naturallyoccurring oscillator.

Pattern collection

The LifeWiki contains one of the most comprehensive catalogues of patterns available on the internet. Within it you will find:


Did you know...

 ... that the waterbear is the single known highspeed oblique spaceship, many orders of magnitude faster than Gemini spaceships and halfbaked knightships?
 ... that there are no known direct reflectors for lightspeed wire signals, or for signals in 2c/3 wires, but that very large reflectors for these signals can be constructed using stable or periodic circuitry?
 ... that 24 tencell patterns exhibit infinite growth, with 17 unique pattern types, but that it has been proven that no ninecell pattern exhibits infinite growth?
 ... that all still lifes up to 18 bits have a known glider synthesis, but it is still not known whether all still lifes are synthesizable?
 ... that the French kiss remained without a glider synthesis until 2013?
 ... that Adam P. Goucher's distributed Catagolue soupsearch project, started in February 2015, has already tested more random soups than any previous such project, and has contributed to the reduction of many glider construction recipes?
 ... that any gliderconstructible Life pattern can be constructed with a fixed maximum number of gliders N, probably less than 1000? It is only necessary to construct a slidingblock decoder, which selfdestructs after converting the position of a fardistant block into a slowsalvo recipe that constructs the required pattern.
 ... that Copperhead is not only the first c/10 orthogonal spaceship ever found, but also remarkably compact for a pattern not discovered until 2016?
 ... that loafer is the fifth smallest nonflotilla spaceship, but was discovered 43 years after the four spaceships smaller than it?
 ... that despite being the fourth smallest nonflotilla orthogonal spaceship, loafer has never appeared from a single randomly generated soup?

