打字猴:1.700041063e+09
1700041063 platinum-group metals,204
1700041064
1700041065 Pluto:as destination,17,330-332;distance from Earth,305-306,307;gravity on,327;moons of,331-332
1700041066
1700041067 population,human:disasters and,21-22,344;growth of,20,346-347
1700041068
1700041069 potassium,162,263
1700041070
1700041071 Project Artemis,156-157
1700041072
1700041073 Project Orion,103-104,242-243
1700041074
1700041075 Project Timberwind,342
1700041076
1700041077 prophylactic surgery. See surgery in space
1700041078
1700041079 Proton-M rocket,113
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
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