Yet another new p30 by carybe:

`x = 48, y = 48, rule = B3/S23`

19b2o6b2o$19b2o6b2o11$16b2o3b2o2b2o3b2o$18b3o6b3o$17bo3bo4bo3bo$18bobo6bobo$

12bo6bo8bo6bo$12bobo8b2o8bobo$13bobo6bo2bo6bobo$2o11bo2bo6b2o6bo2bo11b2o$2o

11bobo16bobo11b2o$12bobo18bobo$12bo5bo10bo5bo$17bobo8bobo$17bobo8bobo$12bo5bo

10bo5bo$12bobo18bobo$2o11bobo16bobo11b2o$2o11bo2bo6b2o6bo2bo11b2o$13bobo6bo2b

o6bobo$12bobo8b2o8bobo$12bo6bo8bo6bo$18bobo6bobo$17bo3bo4bo3bo$18b3o6b3o$16b

2o3b2o2b2o3b2o11$19b2o6b2o$19b2o6b2o!

`x = 32, y = 32, rule = B3/S23`

boboboobooooobobboboooooboobobob$

obooboooobbbooobbooobbbooooboobo$

bobbobobobbbooobbooobbbobobobbob$

oobbooobboooooboobooooobbooobboo$

bboooobobbobbobbbbobbobboboooobb$

ooboobobbboobbobbobboobbbobooboo$

oooobobbobbobbboobbbobbobboboooo$

bobbobbbbobbbbobbobbbbobbbbobbob$

ooobbbobbobboooooooobbobbobbbooo$

obbobbboobobbbboobbbboboobbbobbo$

obbooobbboobbbboobbbboobbbooobbo$

obboboobbbbboboooobobbbbboobobbo$

oooobbbbobboobobboboobbobbbboooo$

boooobbbobbbbobbbbobbbbobbboooob$

ooobboboobboobobboboobboobobbooo$

bbbobboboooobbboobbboooobobbobbb$

bbbobboboooobbboobbboooobobbobbb$

ooobboboobboobobboboobboobobbooo$

boooobbbobbbbobbbbobbbbobbboooob$

oooobbbbobboobobboboobbobbbboooo$

obboboobbbbboboooobobbbbboobobbo$

obbooobbboobbbboobbbboobbbooobbo$

obbobbboobobbbboobbbboboobbbobbo$

ooobbbobbobboooooooobbobbobbbooo$

bobbobbbbobbbbobbobbbbobbbbobbob$

oooobobbobbobbboobbbobbobboboooo$

ooboobobbboobbobbobboobbbobooboo$

bboooobobbobbobbbbobbobboboooobb$

oobbooobboooooboobooooobbooobboo$

bobbobobobbbooobbooobbbobobobbob$

obooboooobbbooobbooobbbooooboobo$

boboboobooooobobboboooooboobobob!

Another copperhead soup, too (although fairly worthless in terms of synthesis reduction):

`x = 16, y = 32, rule = B3/S23`

obooboobobooobob$

ooboboooobbooobo$

bboobboobbbooooo$

ooboobbbooooobbb$

booboobbobobobbo$

oobboobbbbbobobb$

obbbobbbboobobbb$

obboobobbooooboo$

booobbbobobbooob$

bboooboobooobboo$

oobbboobooobbboo$

oobboboboooooobb$

ooobboobbooooobo$

booobboooooboobo$

obobobbbbbboboob$

ooboobbbbbbooooo$

ooboobbbbbbooooo$

obobobbbbbboboob$

booobboooooboobo$

ooobboobbooooobo$

oobboboboooooobb$

oobbboobooobbboo$

bboooboobooobboo$

booobbbobobbooob$

obboobobbooooboo$

obbbobbbboobobbb$

oobboobbbbbobobb$

booboobbobobobbo$

ooboobbbooooobbb$

bboobboobbbooooo$

ooboboooobbooobo$

obooboobobooobob!

EDIT: 27910M in C4_4, by Moth Wingthane:

`x = 32, y = 32, rule = B3/S23`

bobobooobbboooobbbboboboboboboob$

obbooboobbbbbobobooboboobbobobbo$

oboobbobooboooobbbbbobbbbbbbbobb$

bobbbbbobobobooboboboobbobbobooo$

obbooooobobboboooobbbobboobobbob$

bobbbboobbbboboooboooooooobobbbo$

obbbooooobbbooboobooboobbooobooo$

bbbooobooobboboboboboboooooooboo$

oobbbobobboboooboooooobboobbbobb$

bobbbooobbbobobobbbboobbobbooobb$

obboooobooobbobooobboobobbbbbbbb$

boooboboooooooobobboobobbbbboobo$

obbbboobobboobobooboobbooooobobo$

boboboooobbbbooobboboooobobboooo$

bobbobbbobobobbbobooobbooboooobo$

bbboooooobooobobbbobboobbooobbob$

bobbooobboobbobbboboooboooooobbb$

obooooboobbooobobbbobobobbbobbob$

oooobboboooobobbooobbbboooobobob$

obobooooobboobooboboobboboobbbbo$

oboobbbbboboobboboooooooobobooob$

bbbbbbbboboobbooobobboooboooobbo$

bbooobbobboobbbbobobobbbooobbbob$

bbobbboobboooooobooobobbobobbboo$

oobooooooobobobobobobbooobooobbb$

ooobooobbooboobooboobbbooooobbbo$

obbboboooooooobooobobbbboobbbbob$

bobboboobbobbboooobobbobooooobbo$

ooobobbobbooboboboobobobobbbbbob$

bbobbbbbbbbobbbbbooooboobobboobo$

obbobobbooboboobobobbbbbooboobbo$

boobobobobobobbbboooobbbooobobob!

Is this the longest-lived known symmetric methuselah?

Incidentally, an unusual skewed-TL constellation forms from two separate half-TLs sometime around t=15k.

x₁=ηx

V ⃰_η=c²√(Λη)

K=(Λu²)/2

Pₐ=1−1/(∫^∞_t₀(p(t)ˡ⁽ᵗ⁾)dt)

$$x_1=\eta x$$

$$V^*_\eta=c^2\sqrt{\Lambda\eta}$$

$$K=\frac{\Lambda u^2}2$$

$$P_a=1-\frac1{\int^\infty_{t_0}p(t)^{l(t)}dt}$$

http://conwaylife.com/wiki/A_for_allAidan F. Pierce