▁first ▁ro cket ▁sub - unit ▁in ▁the ▁Russian ▁army . ▁ ▁In ▁ 1 8 3 4 , ▁Z asy ad ko ▁retired ▁due ▁to ▁his ▁ill ness . ▁The ▁cr ater ▁Z asy ad ko ▁on ▁the ▁far ▁side ▁of ▁the ▁Moon ▁is ▁named ▁after ▁him . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁http :// www . space . h ob by . ru / first s / z asy ad ko . html ▁ ▁Category : Russ ian ▁scient ists ▁Category : U k rain ian ▁scient ists ▁Category : Russ ian ▁invent ors ▁Category : U k rain ian ▁invent ors ▁Category : Im per ial ▁Russian ▁Army ▁gener als ▁Category : 1 7 7 9 ▁birth s ▁Category : 1 8 3 7 ▁death s ▁Category : Re cip ients ▁of ▁the ▁Order ▁of ▁St . ▁George ▁of ▁the ▁Third ▁D eg ree <0x0A> </s> ▁Pat ric ia ▁Ryan ▁( F ebru ary ▁ 2 5 , ▁ 1 9 2 1 ▁- ▁February ▁ 1 5 , ▁ 1 9 4 9 ) ▁was ▁a ▁child ▁perform er ▁and ▁an ▁actress ▁in ▁old - time ▁radio . ▁She ▁was ▁taken ▁ill ▁during ▁an ▁evening ▁broadcast ▁and ▁died ▁the ▁next ▁day . ▁ ▁Early ▁years ▁Ryan ' s ▁father ▁was ▁a ▁d ough boy ▁in ▁World ▁War ▁I . ▁During ▁his ▁time ▁in ▁England ▁he ▁met ▁an ▁English ▁girl , ▁and ▁they ▁married . ▁Their ▁daughter , ▁Pat ric ia , ▁was ▁born ▁about ▁six ▁weeks ▁before ▁they