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Null Agar Sigal Soruces Methuselahs Null Agar Bubbles

Dirty fuses of the Null Agar Signals on the Null Agar Still bubbles on the Null Agar

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Today's featured article Caterloopillar is the name given to a family of spaceships containing two major parts - the front and the back. In Caterloopillar each part has the properties of a universal constructor, and thus each part is constructing the building blocks of the other part, while also reading and moving a construction tape. As the name suggests, this creates somewhat paradoxical design, similar to the "strange loop" concept. The basic Caterloopillar design can be trivially adapted to produce spaceships with an infinite number of different speeds -- in theory, any rational speed strictly less than c/4. The Caterloopillar was voted the Pattern of the Year 2016 on ConwayLife.com. Read more... In the news October 16: David Bell constructs an engineless 3c/7 orthogonal rake, demonstrating that 3c/7 rakes of all periods 770 or greater can be constructed. October 13: David Bell discovers a period-35 3c/7 orthogonal rake based on a spaceship by iNoMed. October 10: 400spartans posts a population-321 unsynthesizable oscillator with a 275-cell self-forcing patch, a considerable improvement over the previous smallest known unsynthesizable oscillator. September 27: 400spartans reduces the unsynthesizable still life record again, from 154 live cells in a 252-cell self-forcing patch to 153 live cells in a 245-cell patch. September 25: Luka Okanishi discovers a period-38 glider gun engine using a partial by Period1GliderGun; the gun was subsequently reduced by several other contributors. September 14: ENDW’s first forum post contains an implementation of Goldtiger997's proposed omniship design with velocity (16,9)c/60 and period 600000000. This design allows the construction of spaceships for all non-orthogonal velocities strictly below the spaceship speed limit. September 11: russellsprouts constructs the first Langton's Ant emulator in Life not based on the 0E0P metacell. September 11: I6_I6 constructs the first self-synthesizing reflectorless rotating oscillator in Life; Goldtiger997's previous design was not truly self-synthesizing. September 10-11: Nora Brown constructs the first c/6 diagonal puffer, using a reaction by Hunter. iNoMed constructs some smaller examples the next day. While c/6 diagonal puffers based on the Speed Demonoid design are possible, none have yet been constructed, and any such puffer would be much larger. Editable news item submissions page • Archive •

Did you know... ... that there are orphans that are 5 cells high, but 4-cell-high orphans are impossible? ... that 6-cell-high Garden of Eden patterns were constructed as far back as 1973, but 5-cell-high GoEs were unknown until Steven Eker found some in 2016? ... that while both a big S and a ship-tie require four gliders to synthesise individually, there is a dirty 3-glider collision whose final ash contains one of each? ... that no way is known for a 3 × 3 pattern to be tiled into an M × N rectangle to produce a Garden of Eden, but that there are 4 × 3, 4 × 4 and larger tiles that can be repeated in this way to produce GoEs? ... that there are spaceship stabilizations of agars? ... that block is the only finite strict still life where each living cell has exactly 3 neighbours? ... that all strict still lifes up to and including 15 cells have been found by apgsearch in asymmetrical 16 × 16 soups? ... that c/2 orthogonal and c/4 diagonal were the only speeds of spaceships seen to emerge from asymmetric soups on Catagolue until 2020, when a loafer appeared naturally? ... that all currently known standard Herschel conduits produce the same Herschel great-grandfather pattern, except for Fx158? ... that eater 1 is the smallest asymmetric still life?           Showing 10 items out of 197 More did you know... Pattern collection The LifeWiki contains one of the most comprehensive catalogues of patterns available on the internet. Within it you will find: 1773 patterns (including 715 oscillators, 235 spaceships and 375 still lifes); 3556 images (599 animated and 2957 static); Over 3000 downloadable pattern files; Glider syntheses for 1024 patterns. Download pattern collection 6MB .zip archive containing the 5200+ Game of Life RLE pattern files used on the wiki Also available: 38KB .zip archive containing approximately 75 pattern files for other cellular automata