The space derby is similar to the pinewood derby only it uses miniature rockets. These propeller-driven rockets are powered by three rubber bands and travel alon a monofilament fishing line. Boys carve and assemble the rockets themselves under the guidance of an adult family member.
Space derby kits with building instructions can be bought individually or in packs from a local Scouting distributor. Often, the pack's derby committee purchases derby kits in quantity and distributes them to pack families. The local Scouting distributor also will have many derby "extras," such as space derby carriers, accessory kits, extra rubber bands, ribbons, trophies, decals, and more.