1700040490
1700040491
comets,63,202,333-334;as starships,334
1700040492
1700040493
Comité Speciale de l’Année Geophysique Internationale(CSAGI),149
1700040494
1700040495
Commercial Space Launch Amendments Act of 2004,136
1700040496
1700040497
Concorde,138-139
1700040498
1700040499
Concordia Research Station,48
1700040500
1700040501
ConsenSys,208-209
1700040502
1700040503
Controlled Environment Agriculture Center(CEAC),35-36,195
1700040504
1700040505
Cook,Frederick A.,54-55
1700040506
1700040507
coronal mass ejection(CME),80-81
1700040508
1700040509
cosmic rays. See radiation:cosmic
1700040510
1700040511
cosmic ray visual phenomena,86
1700040512
1700040513
Cox Report,158
1700040514
1700040515
cryptocurrency,209
1700040516
1700040517
CubeSat,114n
1700040518
1700040519
Cucinotta,Francis,83,88-89
1700040520
1700040521
Curiosity rover,239,251,259,272,274
1700040522
1700040523
DARPA(US Defense Advanced Research Projects Agency),133
1700040524
1700040525
Dawn spacecraft,208,216,339
1700040526
1700040527
Dear Moon project,186
1700040528
1700040529
Deep Space Gateway. See Lunar Orbital Platform-Gateway
1700040530
1700040531
Deep Space Industries(DSI),209,213
1700040532
1700040533
Deimos,291
1700040534
1700040535
Delta rockets,109,113-114
1700040536
1700040537
delta-v(Δv ),99-101,209
1700040538
1700040539
Desert RATS,227-228
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