The Space Segment refers to the spacecraft itself, including all the hardware and software to be launched into space. Our spacecraft is tiny, often referred to as a “nanosat”. It is just 10 cms x 10 cms x 10 cms, but none the less it has all the components of bigger satellites, eg solar cells, power supply, receivers, transmitters etc.
Of course great care must be taken to minimise the size, mass and power requirements of these components, but the advantage of making a sateillite this small is that the cost to launch it is much smaller than would be otherwise.
To see the details of the flight hardware, please click on the links on the right