Tin or iron sheet building, fitted with tabs and slots for assembly; rectangular base, flat; smaller reactangular box-like building open at front end, mounted on base; roof, part rectangle, part oval, on one side; roof overhangs building; circular tower on top, with push lever; smaller circular tower on top, and red plastic cylinder on top of this; words, "Space Launcher" around top of top tower; separate, removable pin-wheel disc to fit on top of plastic cylinder and to be launched by push lever. Separate "Space Cannon," half circular structure on stand, to be mounted on roof, with red plastic cannon, wood end, 2 wood dowels, red, short, with same. Overall, gray, red, yellow, blue, with words "Space Dome" over open entrance on main building.