Skylab space station (Picture 1) Kimmo Huosionmaa The modern way to think about spacecraft and other structure is that they might be modular, what means that they could be sent to the sky as little pieces. The Skylab space station was actually an empty stage of Saturn V rocket. One of the greatest idea to build the space station was once introduced by Wernher Von Braun. His idea was that to the skies might send rockets, what stages would equip with dock gates. In this “open wheel” structure every element can be replaced very easily in the case of damage. They would be very easy to connect together, and this process would be not more difficult than docking the spacecraft to the International Space Station. If the shape of the space station would be like “open wheel” without a ring, it can be continued and more elements can dock to it if there is needed more space. The open structure allows that next part can be docked to that body. This allows building gigantic space stations...