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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