AI-generated summary
Cangyu Space Base organized the key technology acceptance review of NTN, China's first commercial high-orbit relay satellite system, in Shenzhen. The expert team reviewed the feasibility of the NTN technology solution for high-orbit relay and the results of the ground verification system, and simultaneously discussed the follow-up engineering path.
China News Service, Shenzhen, November 5th (Suo Youwei and Hu Junyao) On November 4th, Cangyu Space Base organized in Shenzhen to carry out the key technology acceptance review of China's first commercial high-orbit relay satellite system NTN. The expert team reviewed the feasibility of the NTN technology solution for high-orbit relay and the results of the ground verification system, and simultaneously discussed the follow-up engineering path. The project successfully passed this key technology acceptance review.
Experts from the University of Science and Technology of China, Harbin Institute of Technology, Pengcheng Laboratory, China Academy of Information and Communications Technology, Beijing University of Posts and Telecommunications and other units participated in the review.
On-site review meeting. Photo courtesy of Cangyu Tianji
After review, all 155 requirements of the ground verification system were met, all 106 test cases passed, and all 4 acceptance issues were closed loop. The system forms a reusable solution in key technologies such as time-frequency synchronization, random access, precise beam pointing, mobility management, wireless link enhancement and multi-user scheduling.
Currently, more than 10 patent applications have been submitted for this project. The successful passing of this review laid a solid foundation for the subsequent construction of the Cangyu space-based commercial relay NTN system.
It is reported that the system has outstanding advantages in enhancing user service flexibility and expanding user service carrying scale. At the same time, relying on the mature 3GPP industrial ecology, it can significantly shorten the product iteration cycle, lower the industrialization threshold, and maximize the commercial value of the system. At the same time, the system will actively serve the national strategy of low-orbit constellation networking construction during the “15th Five-Year Plan” and provide stable and reliable measurement and control communication services for constellation networking and operation management. (over)

China's space scientists performed the first precision laser cutting in orbit, using a robotic arm on the Tiangong space station to make millimetre-scale cuts operated remotely from Earth.
The researchers developed a new method called FLIP, which uses machine learning algorithms to remove starlight from telescope observations. The sensitivity can be up to 15 times that of traditional exoplanet imaging methods. They successfully obtained the first image of 51 Eridani b, which may assist the observatory in identifying Earth-like exoplanets.

NASA's Swift space satellite telescope, which has been in service for 22 years, crashed into the atmosphere over Indonesia on the 4th at about 22 times the speed of sound and burned up. The observatory cost 500 million U.S. dollars and weighed 1.5 tons. It was launched in 2004. It was originally scheduled to have a lifespan of 2 years. It eventually exceeded the standard and served for 22 years. It observed rare astronomical phenomena such as gamma ray bursts and spawned about 7,000 scientific papers.

NASA's Neil Gehrels Swift Observatory re-entered Earth's atmosphere and burned up over Indonesia on Wednesday, less than three months after a rescue spacecraft failed to boost it to a higher orbit.
Based on the observation data of the independently developed AIMS telescope, the team of researcher Deng Yuanyong from the National Astronomical Observatory of the Chinese Academy of Sciences discovered for the first time that the magnetic field in the sun's lower atmosphere is significantly weakened during the outbreak of a solar flare. Relevant results have been published in Nature Astronomy.

NASA's Swift Observatory, which has been in service for 22 years, will crash and return to Earth around Friday due to orbital decay and rescue failure. Some high-density tungsten metal parts may survive the friction of the atmosphere and fall to the surface. The potential return zone of the debris covers large tracts of land such as Africa, Australia, India, Southeast Asia, and Central and South America.