"The Wandering Earth" believe that everyone has seen, human beings are very eager to be in the endless universe, looking for another suitable for the earth human "second earth". However, due to the barriers of science and technology, people can not realize the interstellar "fantasy" of science and technology, and traditional rockets can not carry out long-distance flight, so it is necessary to abandon chemical fuel and find new energy and new propulsion system.

Xi 'an Jiaotong-Liverpool University and the University of Liverpool in the UK have made a breakthrough in the field of controlled nuclear fusion, developing a material that can effectively obtain high purity deuterium. The results have been published in the international academic journal Science.

Deuterium, an isotope of hydrogen, is a potential controlled fusion fuel, but deuterium occurs in nature in very low concentrations. "Usually, high purity, high concentration deuterium is obtained by separating the 'hydrogen-deuterium' gas mixture, but the current technology to achieve this separation is energy intensive, inefficient and expensive." Ding Lifeng said.

A joint Chinese-British team led by Andrew Cooper, a fellow of the Royal Society and professor at the University of Liverpool, has designed a new material that effectively separates deuterium gas from the gas mix through a process known as dynamic quantum screening. This is a hybrid porous organic cage material, which can select deuterium molecules from the gas mixture and adsorb them in large quantities, which is an economical and efficient solution.

A scientist in Germany is currently developing a deuterium engine, a new engine system that can operate at altitudes above 30 kilometers, allowing aircraft to fly at atmospheric borders.

Bekart of the Technical University of Berlin. Professor Gesell and his colleagues are developing plasma engines for the aircraft, a type of magnetoplasma propulsion system. Plasma, also known as plasma, is the fourth state of matter that scientists have discovered after gas, liquid and solid. Gas is formed after electrons are decomposed in the state of high temperature or strong electromagnetic field. Its principle is to raise the gas of air to a certain temperature, and then through high voltage to discharge a few nanoseconds to decompose the gas, so as to generate plasma, thus forming plasma engine.

As far as we know, the resulting plasma jets can reach speeds of up to 20 kilometers per second, which has led many other scientific experts to believe that it has a high chance of practical application, so that the Earth's future aircraft or airships can take off from the ground and fly directly to more than 50 kilometers in the air. Small plasma and fusion reactors are being developed by Lockheed Lockheed in the United States, and by high-tech research teams in China and Russia, but the research is not yet fully formed, and it will take more time and scientists to explore them before they are ready for practical use. Now the team's test engine is only eight centimeters long, less than the length of a pencil, and it's expensive. To be effective thrust for an aircraft, you'd have to install at least 10,000 of them, which is not very practical.