▁himself ▁to ▁be ▁nearly ▁as ▁sk illed ▁as ▁he ▁imag ined ▁himself ▁to ▁be . ▁Roger ▁occasionally ▁made ▁cond esc ending , ▁rac ist ▁remarks ▁about ▁Ast ro ▁but ▁gradually ▁came ▁to ▁like ▁and ▁respect ▁the ▁Ven us ian , ▁although ▁he ▁sometimes ▁maintained ▁his ▁big oted ▁attitude ▁as ▁a ▁dist ancing ▁mechanism . ▁ ▁( Oct ober ▁ 1 9 5 0 - May ▁ 1 9 5 4 ) ▁Captain ▁Steve ▁Str ong ▁– ▁Edward ▁Bry ce ▁Dr . ▁Joan ▁D ale ▁– ▁Margaret ▁Gar land ▁Commander ▁Ar kw right ▁– ▁Carter ▁Bla ke ▁Cad et ▁Alf ie ▁H igg ins ▁– ▁John ▁F ied ler ▁Cad et ▁Eric ▁R att ison ▁– ▁Frank ▁S utton ▁Cad et ▁T . ▁J . ▁Th ist le ▁– ▁Jack ▁Gr imes ▁( Dec ember ▁ 1 9 5 4 - J une ▁ 1 9 5 5 ) ▁Michael ▁Har vey ▁played ▁Captain ▁Str ong ▁for ▁the ▁first ▁six ▁episodes ▁of ▁the ▁CBS ▁series ; ▁Pat ▁Ferr is ▁played ▁Dr . ▁D ale ▁for ▁two ▁episodes ▁of ▁the ▁Du Mont ▁series . ▁ ▁C rew ▁Techn ical ▁Ad visor ▁– ▁Wil ly ▁Ley ▁Writ ers : ▁Albert ▁A ley , ▁Stu ▁By r nes , ▁Frank ie ▁Thomas , ▁Jr ., ▁Ray ▁Mor se , ▁Jack ▁We inst ock , ▁Wil ly ▁Gilbert , ▁Alfred ▁B ester ▁& ▁others . ▁Space ▁Cad et ▁H ats : ▁Major ▁Sports we ar ▁supplied ▁t ins ulated , ▁al umin ized ▁h ats ▁with ▁log os