Astronauts on board China's Tiangong space station have created rocket fuel and oxygen from water and carbon dioxide, similar to how plant's photosynthesize. (Image credit: China Manned Space Agency) Chinese astronauts have just created rocket fuel and oxygen in space using a new type of "artificial photosynthesis." The breakthrough technology, which used fairly basic equipment and minimal energy, could one day be put to use on China's proposed moon base, which is scheduled to be completed withi...