A space nonfiller is any pattern that expands indefinitely to affect all but finitely many cells in the Life plane, but leaves an expanding region of vacuum at its center. The first nonfiller was discovered by Jason Summers on April 14, 1999 :
x = 37, y = 31, rule = B3/S23
19b3o$18bo2bo$12b3o6bo4b3o$12bo2bobo3bo4bo2bo$12bo2bobo3bo4bo2bo$10bo
10bo2bobob3o$10b2o2b2o2bobo4bo5bo$8bo16b2o2b3o$8b3obob2o10bo6bo$6bo8bo
9bobo3b3o$6b3o5bo10bo8bo$3bobo25bob3o$2b5obo26bo$b2o6bo21b5o$2o4b2o18b
obo$bobo3bo2bo15bo2bo3bobo$8bobo18b2o4b2o$b5o21bo6b2o$bo26bob5o$b3obo
25bobo$2bo8bo10bo5b3o$3b3o3bobo9bo8bo$3bo6bo10b2obob3o$5b3o2b2o16bo$5b
o5bo4bobo2b2o2b2o$6b3obobo2bo10bo$7bo2bo4bo3bobo2bo$7bo2bo4bo3bobo2bo$
8b3o4bo6b3o$15bo2bo$15b3o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBNAIL THUMBSIZE 2 THEME 6 HEIGHT 640 WIDTH 640 ZOOM 16 GRID ]]
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