1700041213
Space Exploration Initiative(SEI),230-232
1700041214
1700041215
Space Force,223,281,328
1700041216
1700041217
space hotels,128-130
1700041218
1700041219
space junk,144,158
1700041220
1700041221
Space Launch System(SLS),157-158
1700041222
1700041223
spaceplanes,132-139
1700041224
1700041225
Spaceport America,136-137
1700041226
1700041227
spaceports,136-138
1700041228
1700041229
space race:with China,13,123,154-156;with the Soviet Union,6-8,119,150-152
1700041230
1700041231
SpaceShipOne,134
1700041232
1700041233
SpaceShipTwo,135
1700041234
1700041235
space shuttle,4,9-10,107-109,120,134
1700041236
1700041237
Space Shuttle Challenger ,231
1700041238
1700041239
Space Station Freedom ,10,230-231
1700041240
1700041241
Space Station Ⅴ(fictional),129
1700041242
1700041243
space tourism,72,124-125,130,186-192,287-288
1700041244
1700041245
SpaceⅩ,106-116,123,125,186,245-246
1700041246
1700041247
specific impulse,104
1700041248
1700041249
Sphinx-99,52
1700041250
1700041251
Sputnik Crisis,148-151,153
1700041252
1700041253
Starship(SpaceⅩ spacecraft),110,112,246
1700041254
1700041255
“station-keeping,” 146
1700041256
1700041257
Stone,Bill,161
1700041258
1700041259
Strategic Defense Initiative,342
1700041260
1700041261
Stuster,Jack,54
1700041262
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