On February 10, foreign ministry spokesman Zhao Lijian presided over a regular press conference < p > < / P > < p > a reporter asked a question. It is reported that in a note sent to the United Nations Office for Outer Space Affairs on January 28, the United States denied China's claim that the "star chain" satellite endangered the safety of the Chinese space station twice, saying that the activities of the "star chain" satellite did not meet the established threshold of emergency collision avoidance standards, so there is no need for emergency notice in any case. The US note also said that before sending a note to the United Nations, China did not contact the relevant US departments to express concerns about the dangers posed by the "star chain" satellites. What is China's response < p > source: Zhao Lijian of the Ministry of Foreign Affairs said that China's notification to the United Nations of the dangerous approach of the "star chain" satellite to the Chinese space station and the threat to the safety of astronauts in orbit is to fulfill its international obligations under Article 5 of the outer space treaty. In the relevant collision avoidance events, the US "star chain" satellites are in the state of continuous orbit maneuver, and the maneuver strategy and intention are unknown. Chinese astronauts in orbit are facing urgent security threats. China has to take preventive collision avoidance measures to avoid control. After the collision avoidance incident, the Chinese authorities tried to contact the US side by email for many times, but they did not receive a reply. Now, the United States shirks its responsibility and diverts its attention by saying that the emergency collision standard is offline. This is not a responsible attitude of a space power. Moreover, the United States has no right to unilaterally set a lower limit of the emergency collision standard < p > Zhao Lijian pointed out that Article 9 of the outer space treaty stipulates that the exploration and utilization of outer space by States parties should be based on the principle of cooperation and mutual assistance, and all activities of States parties in outer space should properly take into account the equal interests of other States parties. China has registered the relevant information of the space station with the United Nations and posted the number of orbits of the Chinese space station on the website. In order to safeguard the safety of Chinese astronauts and the space station, China is willing to establish a long-term communication mechanism with the United States and hopes that the United States will take practical measures to avoid the recurrence of such incidents. China also hopes that all countries will jointly respect the international system of outer space based on international law and work together to safeguard the life safety of astronauts in orbit and the safe and stable operation of space facilities < p > Review: < / P > < p > < / P > < p > has the star chain become a troublemaker in space? Twice approaching the Chinese space station, musk was accused of setting his own rules < / P > < p > source: surging News & nbsp < p > < / P > < p > SpaceX satellite chain has approached China's space station twice. The space station assembly implemented preventive collision avoidance control on American satellite chain on July 1 and October 21, respectively. SpaceX has launched more than 1900 star chain satellites. Joseph ashbach, director of the European Space Agency, previously warned that Musk's "star chain" is too large, and he is making space rules himself < p > according to the information recently released on the official website of the United Nations Committee on the peaceful uses of outer space, China's manned space project carried out five launch missions in 2021, successfully launching the space station Tianhe core module, Tianzhou 2 and Tianzhou 3 cargo spacecraft, Shenzhou 12 and Shenzhou 13 manned spacecraft into orbit. The Chinese space station assembly operates stably in a near circular orbit with an altitude of 390 km, and the orbit inclination is about 41.5 ° < p > during this period, the star1ink satellite launched by SpaceX approached the Chinese space station twice. For safety reasons, the space station assembly implemented preventive collision avoidance control on American satellite chain satellites on July 1 and October 21, respectively, namely "emergency collision avoidance" < p > among them, the first emergency collision avoidance occurred: xinglian-1095 satellite has been stably operating in an orbit with an average altitude of about 555 kilometers since April 19, 2020. From May 16 to June 24, 2021, the satellite continued to descend to an average orbital altitude of 382 kilometers, and then maintained its operation at that orbital altitude. On July 1, a close proximity event occurred between the satellite and the Chinese space station. For safety reasons, the Chinese space station took the initiative to take emergency collision avoidance on the evening of July 1, avoiding the risk of collision between two targets < p > the second emergency collision avoidance occurred: on October 21, 2021, a close proximity event occurred between xinglian-2305 satellite and China space station. Since the satellite is in the continuous orbit maneuver state, the maneuver strategy is unknown and the orbit error cannot be evaluated, there is a risk of collision with the space station. In order to ensure the safety of astronauts in orbit, the Chinese space station implemented emergency collision avoidance again on the same day, avoiding the risk of collision between two targets The < p > satellite chain program was once called "one of the most difficult engineering projects in his life" by musk. It plans to use 42000 satellites to provide low-cost, high-speed and stable Satellite Internet services worldwide. Since the launch of the first batch of 60 satellite chain satellites in May 2019, SpaceX has deployed 33 batches of satellite chain satellites for special networking, and 17 batches of satellite chain networking special development have been deployed this year alone. Taking into account the satellite chain satellites carried by the previous "carpool", it has launched 1942 satellite chain satellites so far. Taking into account the two test satellites microsat-2a and microsat-2b launched in February 2018, SpaceX launched 1944 satellite chain satellites < p > "it's amazing that a person has half of the active satellites in the world." Joseph ashbach, director of the European Space Agency, previously said that Musk's "star chain" was too large for regulators or competitors to catch up. He even urged continental European leaders to stop facilitating Musk's ambition to dominate the new space economy, and warned that musk was making space rules himself The potential threat of < p > satellite chain to spacecraft also makes NASA layout ahead of schedule. NASA and SpaceX signed a joint space flight safety agreement this year. The agreement focuses on avoidance between NASA spacecraft and SpaceX chain satellites. The agreement requires SpaceX to maneuver any "star chain" satellite close to the international space station or NASA spacecraft, and NASA will not maneuver < p > in addition to the close proximity event with the space station, the twinkling of star chain satellites in the night sky also interferes with astronomical observation. Astronomers worry that the star chain program may "pollute" the sky and seriously affect the observation of the universe by ground-based telescopes < p > the analysis report of square kilometer array radio telescope (ska) also studies the impact of star chain and other constellation plans on square kilometer array radio telescope. The study found that they would interfere with a radio band used by the ska program and hinder the search for organic molecules and water molecules as a key symbol of cosmology in space < p > extended reading: < / P > < p > the American satellite chain satellite approached the Chinese space station twice this year. Experts: it may be a tentative investigation < p > source: universal time ?
2023-03-22 10:04:50