SpacecraftExtraterrestrial EnvironmentSpace FlightJupiterMarsUnited States National Aeronautics and Space AdministrationEcological Systems, ClosedMedical Missions, OfficialCosmic DustMeteoroidsSaturnMissions and MissionariesSpace SimulationMoonWeightlessnessCosmic RadiationEnvironment, ControlledIceSolar SystemAtmosphereEnvironmental MicrobiologyVolcanic EruptionsAstronautsBacillusSpores, BacterialMicrococcusGravitationFungiCorynebacteriumActinomycetalesExistentialismBacteriaWater