Today's featured article
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| Period-43 glider gun is a true period 43 glider gun discovered by Nico Brown on September 11, 2022. It uses the same honey farm + fishhook → glider reaction that many other glider guns do. It was originally found in a form using a block and eater instead of the catalyst, but the block got turned into a pond rather than actually being restored, so Bellman was used to complete it.
This is the only known period-43 gun, and oscillators based on this gun were the only known period-43 oscillators that don't use the Snark before the discovery of the p43 pi-heptomino hassler in November 2022. Prior to that, the 80-cell form of the gun capped with fishhooks was also the smallest known period-43 oscillator by population.
A 30-glider synthesis of the gun was found early on the day after its discovery.
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In the news
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Did you know...
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- ... that no Caterpillar-type spaceships were completed for almost ten years after the original Caterpillar was constructed in 2004, but that two different designs, the waterbear and the centipede, were finished in 2014?
- ... that the first spiral-growth pattern in Conway's Life was constructed in 2014?
- ... that among known glider recipes for irreducible objects, the Gemini spaceship has the largest known minimal recipe not counting encoded RCT recipes, currently 173,449 gliders — the runner-up being the self-synthesizing oblique loopship which is its own 144,221-glider synthesis?
- ... that it was shown in 2014 that any salvo of gliders, no matter how tightly packed, can be constructed by crashing together gliders whose initial positions are farther apart than any chosen finite distance?
- ... that no spaceships with velocities other than c/4 diagonal (glider), c/2 orthogonal (*WSS variants), and c/12 diagonal (Corderships) had known glider syntheses until 2003, when a 2c/5 spaceship gun was constructed?
- ... that after ten years with no new small spaceship syntheses, a glider construction was found for the c/7 loafer in 2013 less than three hours after its discovery?
- ... that a spaceship made of spaceships was only a theoretical concept in Conway's Life (except for 0E0P metacell patterns that were much too large to run) until an explicit universal constructor based example was constructed in 2021?
- ... that glider constructions for the B29, X66, half-X66 with HWSS, Pushalong 1, 25P3H1V0.1, 30P5H2V0, 30P4H2V0, a pufferfish spaceship, and the weekender were discovered in 2015 — more than twice as many new spaceship recipes as had been completed in the entire previous decade?
- ... that in 2014 and 2015 alone, more new spaceship syntheses have been completed than were found in all the years between 1970 and 2013?
- ... that as of September 2023 there are 253 different still lifes known to be constructible by colliding four or fewer gliders, but this list is almost certainly not complete?
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Pattern collection
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| The LifeWiki contains one of the most comprehensive catalogues of patterns available on the internet. Within it you will find:
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