With the rapid development of science and technology, the military competition and competition around space among countries are escalating -- the military competition in space presents a new trend In recent years, science and technology have changed with each passing day, and the military competition and competition among countries around space have been escalating. The United States, France, Japan, Britain, Germany and South Korea have established space military forces one after another and stepped up the study of space combat theory and combat style. At the same time, the space game of various countries is accelerating to extend to the Earth Moon space, and the characteristics of the diversified and mixed use of space forces are becoming more prominent. These new trends in the militarization of space deserve high attention. Space warfare is emerging With the frequent military exercises in space, space has become a parallel combat area with land, sea and air. Judging from the practice of various countries in organizing space military exercises, relevant space warfare methods have surfaced. Among them, space orbital warfare, space network electronic warfare and space navigation warfare have attracted much attention. The orbit operation of spacecraft follows the basic principle of orbit dynamics. Orbital warfare, that is, military confrontation around orbital resources, is an important content of space warfare. Among them, the direct game confrontation between on orbit spacecraft has the most "focus": one spacecraft carries out reconnaissance, surveillance, even interference, expulsion, towing, destruction and other tasks on the other spacecraft by approaching, skimming, accompanying and circling. The 9th delta force of the US space force is a force specializing in orbital warfare. At present, the United States has developed gssap satellite, Clio satellite and other orbital warfare weapons, and is developing Eagle mobile aircraft, armor elastic satellite, pods orbital preset delivery system and other experimental weapons. According to the 2030 development plan of space system capability of the United States, the United States will build a high orbit space fleet based on the "rooster" space carrier after 2030, make normal deployment in peacetime, adopt the "wolf pack" tactics in wartime, release the "Tetra" attack and defense small satellite and block the high orbit area. In addition, the US "star chain" program, although in the name of civilian use, can also become a weapon of orbital warfare in wartime. Russia also attaches great importance to the capacity-building of orbital warfare. The central space reconnaissance center of the Russian Aerospace Command is responsible for monitoring the number and status of orbital clusters of foreign space systems. According to media reports, the "anti satellite" satellite developed by Russia can make multiple orbit changes to approach the target satellite, and then destroy or disable the target satellite by directional explosion warhead or laser, microwave and other means. The EU recently proposed to build an independent space interconnection constellation and draft "space traffic rules" to ensure the safety of spacecraft in orbit. Satellites and other spacecraft are the most important components of space infrastructure, but their function and operation are highly dependent on network power technology support. Satellite system, ground command and control system, earth and sky link, etc. may be attacked by network electricity, which will seriously damage the function of the satellite. In early March, Rogozin, President of the Russian National Aerospace Group, said that the group's security system automatically repelled hackers' cyber attacks on the Russian space flight control center and satellites. In addition, Russia also has the ability to interfere with the downlink and uplink of communication satellites, such as tirada-2 system and bylina mm system specially used to interfere with the uplink. The integration of space technology and network power technology is also an important basis for the US military to carry out all area war. In particular, the military application of the "star chain" plan has made important progress in the construction of Global Combat indicators such as the interconnection of combat units and real-time battlefield situation awareness. In addition, the US space force is also trying to improve the space network's electronic warfare capability by building a "space shooting range" virtual combat system and establishing a "network defense team". In addition, space navigation warfare has also entered people's vision. Preventing the enemy from using satellite navigation information and ensuring the effective use of satellite navigation information by our own side and friends without affecting the peaceful use of satellite navigation information outside the theater is an important purpose of Navigation Warfare. Therefore, it is necessary to cooperate with space, network, electromagnetic and other combat forces to ensure effective control of information such as "positioning, navigation and timing". Schematic diagram of on orbit service. The game space continues to expand Space can be divided into near earth space, Earth Moon space and interplanetary space. Earth Moon space has great strategic value - from the perspective of space structure, it can control the near earth space downward and the interplanetary space towards Mars and other celestial bodies upward. Therefore, while accelerating their entry into near earth space, the countries concerned also set their eyes on Earth Moon space. The US military's preemption of the battlefield initiative in Earth Moon space has entered a substantial acceleration stage. In June 2021, the US Air Force Research Laboratory released the introduction to Earth Moon space, put forward the concept of future Earth Moon space operations, and took the experiment of "Earth Moon space Highway Patrol System" as the primary task of entering Earth Moon space. Relevant bidding requirements have been released. In addition, the US Department of defense proposed to use nuclear energy as the driving force of the future satellite fleet, and the US Aquarius space company announced to start the construction of lunar high-speed communication network to improve the extraterrestrial communication environment. The relevant actions of the United States will inevitably stimulate the Earth Moon space competition and even trigger a new arms race. Recently, the European Space Agency has formulated a plan for human navigation on the moon, so as to effectively support the European Space Agency's activities on the moon. India announced a new lunar probe launch plan, which is expected to launch "moon ship 3" in August this year. Relevant parties in Japan also put forward the white paper "moon industry vision: Earth 6.0", urging the Japanese government to seize the Earth Moon space economic zone. Rapid development of cutting-edge technology The competition of space militarization is essentially a process in which relevant countries seek military advantages with scientific and technological advantages, so as to win the strategic initiative and seize the first opportunity in the space battlefield. At present, major countries are strengthening technological research around the global situation awareness ability, automatic threat avoidance ability, automatic damage repair ability and rapid traceability and counterattack ability of space assets. In order to solve the power problem of spacecraft running for a long time, relevant countries have focused on nuclear power and propulsion technology. Russia is vigorously developing the "Zeus" nuclear powered space tug, hoping to build it into the main connecting vehicle between future space stations, and has the ability to perform complex military and scientific missions in deep space. In December 2020, the US government issued the sixth space policy directive "national space nuclear power and propulsion strategy", hoping to promote the development of us space nuclear power and propulsion technology. On orbit service and manufacturing technology can be used to extend the on orbit time of satellites and other spacecraft and enhance or expand their mission capability. Japan is studying the construction of a "space patrol ship" with the functions of warning, surveillance and supply in space. The UK also aims at the field of on orbit services and speeds up the "active debris removal and on orbit services" program. The US space force plans to establish a space-based logistics on orbit service system to provide on orbit maintenance and recovery of small satellites of space carriers in peacetime, taking into account space traffic management and law enforcement tasks; In wartime, it carries out space combat missions such as approaching, catching and controlling the other party's spacecraft. The rapid development of digital technology and intelligent technology has created conditions for the generation and improvement of space military capabilities. The US space force focuses on digital engineering, digital talents, digital headquarters and digital warfare, and seeks to build a real "digital service" through technological change. It also proposed to create a space army meta universe to support space combatants to carry out cooperation, training and other activities through an interactive 3D virtual reality environment. (outlook new era)