WAdvanced Spaceborne Thermal Emission and Reflection RadiometerWAFP-675WAlpha Magnetic SpectrometerWAlpha particle X-ray spectrometerWCheMinWChemistry and Camera complexWCold Atom LaboratoryWDynamic Albedo of NeutronsWEquatorial Vortex ExperimentWEuropean Retrievable CarrierWExobiology Radiation AssemblyWFaint Object SpectrographWFe, Fi, Fo, Fum, and PhooeyWHeliophysics Science DivisionWHigh Speed PhotometerWHubble Space TelescopeWInflatable Antenna ExperimentWLiving Interplanetary Flight ExperimentWMars Environmental Dynamics AnalyzerWMicrOmega-IRWMuscle Atrophy Research and Exercise SystemWNear Infrared Camera and Multi-Object SpectrometerWPAMELA detectorWPicSatWPUGASWRadiation assessment detectorWRover Environmental Monitoring StationWSample Analysis at MarsWScientific research on the International Space StationWSpace Telescope Imaging SpectrographWTanpopo (mission)WW.O.R.F. (Write Once Read Forever)WWake Shield Facility
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