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There are a wide variety of materials used for either, but satelites are usually made to be etremely light weight, and use materials such as titanium and alluminum. Addidtionally, they'll use composites and alloys, such as nickel-cadmium or aluminum-beryllium. Rockets also use a base of aluminum or titanium to stay light weight, and may also be coated in a thermal protection system to reduce friction and heat during reentry, similar to a satellite.