▁Assuming ▁the ▁presence ▁of ▁a ▁space ▁station ▁for ▁storing ▁the ▁prop ell ant , ▁an ▁orb ital ▁D H - 1 ▁could ▁be ▁ref ue led ▁after ▁ 1 7 ▁launch es . ▁Link ing ▁two ▁such ▁ref ue led ▁stages ▁nose ▁to ▁nose ▁would ▁enable ▁you ▁to ▁take ▁~ 3 5 , 0 0 0   lb ▁to ▁the ▁L un ar ▁surface , ▁the ▁Mart ian ▁surface , ▁or ▁ge os ynchronous ▁orbit , ▁and ▁return ▁to ▁the ▁station . ▁Due ▁to ▁fuel ▁requirements , ▁the ▁cost ▁to ▁these ▁locations ▁is ▁ 6 ▁times ▁greater ▁than ▁the ▁cost ▁to ▁LE O . ▁ ▁Vari ants ▁with ▁a ▁stretch ed ▁cabin ▁and ▁a ▁h ing ed ▁nose ▁have ▁also ▁been ▁suggested . ▁The ▁former ▁could ▁be ▁out f itted ▁in ▁orbit ▁to ▁carry ▁people ▁in ▁compar ative ▁comfort ▁on ▁long ▁duration ▁fl ights , ▁while ▁the ▁latter ▁could ▁be ▁used ▁to ▁carry ▁bul ky ▁cargo ▁that ▁would ▁not ▁fit ▁through ▁the ▁normal ▁cargo ▁h atch . ▁For ▁inter plan et ary ▁fl ights , ▁the ▁book ▁suggested ▁using ▁one ▁R L - 6 0 ▁modified ▁to ▁run ▁on ▁m eth ane ▁which ▁was ▁fitted ▁with ▁an ▁engine ▁bell ▁extension , ▁which ▁was ▁remov able ▁to ▁allow ▁aer obre aking . ▁ ▁References ▁ ▁Category : Form er ▁proposed ▁space ▁launch ▁system ▁concepts <0x0A> </s> ▁An ta e ot rich a ▁imm ota ▁is ▁a ▁moth ▁of ▁the ▁family ▁De press ari idae . ▁It ▁is ▁found ▁in ▁French ▁Gu iana ▁and ▁Guy