Here’s another big spaceship evolving from a soup. The rule here is B358/S23, and the soup has D2_+1 symmetry.

x = 143, y = 41, rule = B358/S23 47b2o$49bo$51b2o$45bo7bo32bo$b2o21bo20bob3o36bo35b3o$o2bo19bobo24bo3bo 30bobo34bo14b2o$bobo18bo3bo14bobo5b2o32bo5bo32bo4bo12b2o$5bob3o12bo3bo 17b3obo2b4o2bo24bo7bo17bobo12bo12b2obo2bo$7bo2bo12bobo15bo3b2ob2o3bo3b o25bobobobo18bobo14bo2bo4bo3bob2obo$3b5ob2o13bo15bo2b3o11b2o25bo3bo35b 2o2bo4bo3bo2b3o$2bo2bo36bo3b2o3b2o4bobo19b2o34b2o6bo4bo4bo$2bo2b2o5b2o 30bob2o8bo2bo19b2o4bobo20bobo4b2o6bo4b2o4bo2bo$6bo6b2o2bo22b3ob2o2bo7b o27b2ob2o19bobo13bo4bo6bo$4bob2o4b2o2bo3bo23b2o2bo7bobo26b3o37bo$2bobo 12bobobo24bobobo6bo28bo39bo$2bobo4bo7bob4o25b2o$4bo3bo3b2o4b2obo26b2o$ 8b3ob2o3b2obo$18bo4$18bo$8b3ob2o3b2obo$4bo3bo3b2o4b2obo26b2o$2bobo4bo 7bob4o25b2o$2bobo12bobobo24bobobo6bo28bo39bo$4bob2o4b2o2bo3bo23b2o2bo 7bobo26b3o37bo$6bo6b2o2bo22b3ob2o2bo7bo27b2ob2o19bobo13bo4bo6bo$2bo2b 2o5b2o30bob2o8bo2bo19b2o4bobo20bobo4b2o6bo4b2o4bo2bo$2bo2bo36bo3b2o3b 2o4bobo19b2o34b2o6bo4bo4bo$3b5ob2o13bo15bo2b3o11b2o25bo3bo35b2o2bo4bo 3bo2b3o$7bo2bo12bobo15bo3b2ob2o3bo3bo25bobobobo18bobo14bo2bo4bo3bob2ob o$5bob3o12bo3bo17b3obo2b4o2bo24bo7bo17bobo12bo12b2obo2bo$bobo18bo3bo 14bobo5b2o32bo5bo32bo4bo12b2o$o2bo19bobo24bo3bo30bobo34bo14b2o$b2o21bo 20bob3o36bo35b3o$45bo7bo32bo$51b2o$49bo$47b2o!

It goes left to right (right to left in the original soup) at speed 36c/72.

Again, the way this comes about is through development of a small seed. In this case at generation 83 you get a couple of these objectswhich in four generations recur, inverted, but with some debris.By itself, this seed becomes a 36c/72 puffer.But two of them, mirror images at just the right separation, have their smoke trails interact in such a way as to extinguish them, and the result is a spaceship. If you start with this pair

x = 9, y = 29, rule = B358/S23 $2bo2b3o$2bob2obo$b2obo2bo$5b2o$2b2o18$2b2o$5b2o$b2obo2bo$2bob2obo$2bo 2b3o!

you end up with a ship, plus a couple of blinkers.

These puffer seeds crop up fairly regularly — they develop into puffers 214 times out of 5,274,253,500 C1 soups — though this looks like the first time two of them have produced a spaceship. This symmetric object isn’t the only way to kill the puffer smoke, though. Here are six other ships produced by placing two puffers at various relative positions and phases. Undoubtedly there are lots more.

x = 363, y = 80, rule = B358/S23 37bo$11b2o9bo13b4o264bo3bo38bo$10bobo11b2o10b2ob2o262bo2bo2bo14b4obo2b obo9b3obo$12bo8bo3bo7b2o5b2o147b3o131bo3bo2bobob2o7b3o2b2o$13bo11bo6b 4o3b2o148bo14b2o117bob3o5b2o7b2ob4o$2b2o8b3o10bo7b4o152bo4bo12b2o90b2o 3bobobo15bo7bobo2bo4bo2b3o$2b2o6b2o2bo7bobo9b3o138bobo12bo12b2obo2bo 89b2o3bo3bo20bobo4bo$9b2ob2obo7bo151bobo14bo2bo4bo3bob2obo95bobo12b2o 12b3o$11b2o2bo175b2o2bo4bo3bo2b3o96bo3b3o6bo14bo$16bo165b2o6bo4bo4bo 119b2o$15bo159bobo4b2o6bo4b2o4bo2bo102b3o$11bo163bobo13bo4bo6bo102bo2b o$11b3o178bo113bo$193bo112b4o$182b3o123b2o31bo$35bo146bo14b2o107b2o31b o2bo$9b2o9bo13b4o111bo32bo4bo12b2o104b2o3bo26bo$8bobo11b2o10b2ob2o108b obo33bo12b2obo2bo108bo11b2o2b2o3b2o8bo2b3o$10bo8bo3bo7b2o5b2o106bo38bo 2bo4bo3bob2obo104b2o2bo10bobob3o2b3o8bob2obo$11bo11bo6b4o3b2o108b3o34b 2o2bo4bo3bo2b3o98b3o3b2ob2o10b3o2bobo5bo2bo2b2obo2bo$2o8b3o10bo7b4o 112bob2o32bo4bo4bo104b2o2bo2bo2b3o17b3ob3o2bo7b2o$2o6b2o2bo7bobo9b3o 113b2o33bo4b2o4bo2bo100b2o3b2obob2o19b2o3b2o6b2o$7b2ob2obo7bo126b2o34b o4bo6bo122bo12b3o$9b2o2bo171bo119bobo11b2o$14bo134b2o35bo119bo12b2o$ 13bo137bo156b2o$9bo297b4o$9b3o295b4o$309bo25$5bo3bo38bo$4bo2bo2bo14b4o bo2bobo9b3obo$24bo3bo2bobob2o7b3o2b2o251b3o52b2o$24bob3o5b2o7b2ob4o 139b2o108bob2o57b2o$2o3bobobo15bo7bobo2bo4bo2b3o106bo34bob2o9bo6b3o85b 3obobo29b5o8bobo6b2obo2bo$2o3bo3bo20bobo4bo116b2o34bob2o8b2o4bo2bob2o 83b2o3bo29bob2ob2o7b2obo2bo3bob2obo$6bobo12b2o12b3o115b4o5b3o26b3o3b2o 4bo3bo6bo121b2o10bob2obo3bo2b3o$7bo12bo14bo119bo3bo2b3o32b2o2b3o3bo6bo 112b2o20bobobo$21b2o125b2o4b2o3bo3bo20b2o10b3o3b2o3b4o2bo113b2o7bo12b 2o3bo2bo$9bo3b2o133b2o3bobo3bo24b2o10bo5bo8bo123bo20bo$9bo4b2o136bo39b obo138b5o$9bo149bo32b3o137b3o$49bo101bo3bob3o33bo138b3o2bobo$11b2o34bo 2bo99b2o180b3o3bobo$46bo103bob2o178b2o5bo$31b2o2b2o3b2o8bo2b3o95b2o4b 3o173b2o$14b2o14bobob3o2b3o8bob2obo104b2o32b2o160bo$13bo2bo13b3o2bobo 5bo2bo2b2obo2bo99bo4b2o30b5o13bo123b2o9b3o4b4o2bo$6b2o3bobo2bo19b3ob3o 2bo7b2o99bobo3b2o30b2ob2o11bo2bo131b2o7bo6bo$6b2o3b5o21b2o3b2o6b2o105b o2bo32b2o2bo9bo127b7obo5b2obo6bo$27bo12b3o110bo3bo2bo34b5o6bo4bo2b3o 118b5o2b5o6bo2bob2o$27b2o123b3obo39bob3o3b2o5bob2obo110b2o6bo12bobo4b 3o$27b2o123b3o42bo2b2o2b2obo2b2obo2bo110b2o12bo7bo$16b2o169b2o9b2o5b2o 7b2o119b2o$15b4o168b2o8b2ob2o9b2o121b2obo$15b4o176b3o137bobo$17bo178bo 139bo!