Trusty Spacemaster, a small wheeled bicycle made by Trusty Manufacturing in the 1960s and 1970s
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Joint European Master in Space Science and Technology or short SpaceMaster, an Erasmus Mundus programme in Europe
Silent Death is a miniatures space battle game by Iron Crown Enterprises (ICE), based on the Star Strike sourcebook to the Spacemaster role-playing game, but with vastly simplified mechanics.