Preparing a CubeSat. Cubesats are nanosatellites that follow the popular ‘CubeSat’ standard, which defines the outer dimensions of the satellite within multiple cubic units of 10x10x10 cm. They typically weigh between 1 and 10 kilograms. For instance, a 3-unit CubeSat has dimensions of 10x10x30 cm and weighs about 3-4 kg.