CubeSats are 10cm cubes built to a standard set of interfaces and design requirements. This standard has led to the development of a family of spacecraft that are small and simple enough even for university student teams to build and operate their own space mission. Simple CubeSats can be an inexpensive way of testing new systems in a real space mission scenario (i.e., "space qualifying"). Examples include telemetry, telecommand and data acquisition (i.e., especially effects of delay and disturbance), ground station design and implementation, formation flying, and attitude determination. Such systems, once tested in CubeSat missions, can be implemented in more advanced space missions with lower risk.
So far, CubeSats have flown on a number of different launchers, namely Dnepr, Eurockot, Kosmos 3M, Minatur, PSLV and M-V. To date there have been a total of 22 successful or partially successful CubeSat missions and 20 failures (14 of them due to launcher failures). Today there are numerous organisations around the world developing CubeSat missions and the number of missions is set to increase rapidly. In his research, Christos has also been studying plans for future space missions using MEMS. Researchers such as the MEMSat-1 team in China and ISIS in the Netherlands are currently developing designs and experiments to prove that MEMS can dramatically reduce the mass of future satellites. Considering the high costs of launching payloads to space, MEMS and other nano-technologies offer the possibility of dramatically reduced costs for space missions.