Complex sentence: The team is now working on a Cubesat-based spaceship consisting of two Cubesat frames and will have a size of 10 x 10 x 20 centimetres.
Split into simpler sentences: The team is now working on a Cubesat-based spaceship consisting of two Cubesat frames. It will thus have a size of 10 x 10 x 20 centimetres.