打字猴:1.70004083e+09
1700040830
1700040831 magnesium,163,165
1700040832
1700040833 magnetosphere,18,80,128
1700040834
1700040835 Malapert Mountain,180
1700040836
1700040837 Mare Tranquillitatis Hole,185,190
1700040838
1700040839 Mariner 9 spacecraft,250
1700040840
1700040841 Mars:asteroid use,203,209,211-212,215;atmosphere of,224,258,284,302;atmospheric pressure on,251,254-255,297-301;bodily changes on,293-296;comparison with Antarctica,224,285,289-290;comparison with Moon,173-175,224-225;crew selection for,275-278;distance from Earth,240,305-306;dust storms on,250,262;food security on,259-265;health risks on,234-239;homesteading on,291;human migration to,279-280;indoor air on,257-259;landing on,273-274;NASA plan for,220,247-249;possibility of life on,282-284;profitability,14,267-270;radiation danger on,84,238-239,250-251;shelter on,253-257,275;technology gaps and,271-273;temperature on,249;terraforming on,296-303;timekeeping on,285-287;tourism to,287-289;travel time to,240-244;water on,265
1700040842
1700040843 Mars 2 spacecraft,239,250
1700040844
1700040845 Mars 3 spacecraft,152,239,250
1700040846
1700040847 Mars500 project,52-54
1700040848
1700040849 Mars City Design,275
1700040850
1700040851 Mars Desert Research Station(MDRS),226-227
1700040852
1700040853 Mars Direct mission concept,223,232-234,241-242,246,248
1700040854
1700040855 Mars One,244-245,265-266
1700040856
1700040857 Mars Science Laboratory(MSL),239,274
1700040858
1700040859 Mars Society,226-228
1700040860
1700040861 mass driver,164-165,269
1700040862
1700040863 MAVEN spacecraft,84
1700040864
1700040865 McKay,Christopher,258-259,262,299,303
1700040866
1700040867 McMurdo Station,33,35
1700040868
1700040869 medium-earth orbit(MEO),127
1700040870
1700040871 Mercury,304,311-314
1700040872
1700040873 Mercury 13 (film),153n
1700040874
1700040875 Merlin rocket engines,110
1700040876
1700040877 metallic hydrogen,105
1700040878
1700040879 meteorites,34
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