1700041080
1700041081
Proxima Centauri,305
1700041082
1700041083
Psyche(16)asteroid,204
1700041084
1700041085
psychological health risks,44-45,50-51,54-55
1700041086
1700041087
pulse-detonation rocket engine,116
1700041088
1700041089
Quayle,Dan,231
1700041090
1700041091
radiation:cosmic,18,85-92,174-176,224,250-251,256;HZE particles,85,88;lethal dose,82-84;solar,18,78-85,174-176,224,250-251,256;units,defined,81
1700041092
1700041093
radiation-induced cognitive decline,88-89
1700041094
1700041095
radio-isotope thermoelectric generators(RTGs),342
1700041096
1700041097
ramjets,133
1700041098
1700041099
rare-earth elements,162,168-169
1700041100
1700041101
Reagan,Ronald,170,222
1700041102
1700041103
Rendezvous with Rama (Clarke),23
1700041104
1700041105
RESOLVE oxygen extractor,228
1700041106
1700041107
Return to the Moon (Schmitt),167
1700041108
1700041109
“Return to the Moon”(symposium),123
1700041110
1700041111
Rhea,320
1700041112
1700041113
Robinson,Kim Stanley,296,302
1700041114
1700041115
rocket equation,97-100,104
1700041116
1700041117
Rocket Lab,114-115
1700041118
1700041119
Rocket Propellant-1(RP-1),104
1700041120
1700041121
Roosevelt,Franklin D.,345
1700041122
1700041123
Roscosmos,120
1700041124
1700041125
runway,high-altititude,146
1700041126
1700041127
Russia. See Soviet accomplishments in space;space race
1700041128
1700041129
Ryugu,207-208,210-211
[
上一页 ]
[ :1.70004108e+09 ]
[
下一页 ]