ConwayLife.com

For convenience, an example of Jedi bounce trick
x = 76, y = 76, rule = B3/S23
24bo26bo$25bo24bo$23b3o24b3o7$33bo8bo$34bo6bo$32b3o6b3o6$37b2o$37b2o5$
2bo70bo$obo70bobo$b2o70b2o7$11bo52bo$9bobo52bobo$10b2o52b2o3$17b2o38b
2o$17b2o38b2o3$10b2o52b2o$9bobo52bobo$11bo52bo7$b2o70b2o$obo70bobo$2bo
70bo5 ...

May there be "indestructible" objects? that is, an object that can be caught up by common patterns (say, xWSS and gliders) but cannot be destructed completely?
Objects like c/2o, c/4d spaceships are excluded because they cannot be caught up, but some c/2o puffers can be included because signals may ...

Glider missed a Karel's p177

x = 57, y = 58, rule = B3/S23
55bo$54bo$54b3o10$16bo12bo$9b2o24b2o$8b3o3b2o14b2o3b3o$14b2ob2o8b2ob2o
$16bo12bo4$2bo40bo$b2o40b2o$b2o40b2o4$2b2o38b2o$2b2o38b2o$o3bo36bo3bo
$3bo38bo$3bo38bo9$3bo38bo$3bo38bo$o3bo36bo3bo$2b2o38b2o$2b2o38b2o4$b2o
40b2o$b2o40b2o$2bo40bo4 ...

How are the reflectors that require the glider stream to have no gaps (patterns like Merzenich’s p26 glider shuttle and p31 glider shuttle) studied? What are such reflectors called (dependent reflector?) and how likely is it to find such a reflector of p19, p34, p38 or p41?

How to make effective attempts on finding billiard tables? Are there ways to do searches on the interior part for specific stators?
It can be seen that the White Whale in LongLife (B345/S5) may never collapse since the edge is guaranteed to be reborn every 2 ticks, and we may check the period for ...

Thanks for your links and detailed instructions.

How to identify an evolutionary sequence or methuselah, especially ones not in the lists of common/long-lived patterns (e.g. xp0_4q96)?
Is there somewhere to view the (common sequences/fewest cell predecessor) that contains a specific pattern(e.g. a snake/elevener)?

e^(iπ)+1=0 in 47 gens

13-bit U-turner predecessor, at generation 255 of R-pentomino(converges to generation 1 of U-turner at 275)
x=6, y=7, rule=B3/S23
b2o$o2bo$2obo$bob2o$4b2o2$4bo!
13~15-bit predecessors similar to generation 252:
x=66, y=11, rule=B3/S23
2bo18bo18bo18bo$bo18bo18bo18bo$o18bo18bo18bo$o18bo18bo18bo ...

The final population of E-heptomino was not correct on its page.
It should be 52, so F/I=7.4, F/L=0.152.
*EDIT: corrected.