巡天空间望远镜同属于第四代巡天望远镜，是中国载人航天工程规划建设的大型空间天文设施，口径2 米，具有大视场、高像质、宽波段等特点，有望在宇宙学、星系、银河系、恒星以及行星等多个天体物 理领域取得重大科学发现。在望远镜发射前进行科学仿真，是确保重大科学目标实现的重要环节。为保 证中国空间站巡天空间望远镜科学产出的及时性和可靠性，科研团队针对望远镜的主光机和各个观测终 端，构建了一套端到端观测仿真套件，对观测数据实现了像素级的高质量仿真，将用于望远镜的整体性 能综合评估。 据了解，巡天空间望远镜是中国空间站的重要组成部分，发射升空后将与空间站共轨长期独立飞行，开 展巡天观测，短期停靠空间站进行补给和维护升级。（记者胡喆） 记者从中国科学院国家天文台获悉，我国科研团队在中国空间站巡天空间望远镜科学数据仿真研究方面 取得进展，标志着中国为这一旗舰级空间天文设施的科学研究做好了准备，为其未来发射升空后产出原 创性科学成果奠定了基础，相关研究由国际学术期刊《天文和天体物理学研究》1月7日以专刊形式在线 发表。 ...

清华大学天文系教授李成表示，成果论文完整而系统地展示了望远镜主巡天模块及各附属模块的仪 器性能和模拟仿真数据，为巡天空间望远镜发射前的数据处理系统研发和测试、科学预研究，以及发射 后的科学运行提供了可靠的数据保障。 记者从中国科学院国家天文台获悉，我国科研团队在中国空间站巡天空间望远镜科学数据仿真研究 方面取得进展，标志着我国为这一旗舰级空间天文设施的科学研究做好了准备，为其未来发射升空后产 出原创性科学成果奠定了基础，相关研究由国际学术期刊《天文和天体物理学研究》1月7日以专刊形式 在线发表。 随着国际上第四代空间和地面巡天望远镜的陆续建造和投入运行，大量观测数据带领人类进入大数 据天文学时代。巡天空间望远镜同属于第四代巡天望远镜，是我国载人航天工程规划建设的大型空间天 文设施，口径2米，具有大视场、高像质、宽波段等特点，有望在宇宙学、星系、银河系、恒星以及行 星等多个天体物理领域取得重大科学发现。 在望远镜发射前进行科学仿真，是确保重大科学目标实现的重要环节。为保证中国空间站巡天空间 望远镜科学产出的及时性和可靠性，科研团队针对望远镜的主光机和各个观测终端，构建了一套端到端 观测仿真套件，对观测数据实现了 ...

据新华社北京1月7日电(记者胡喆)记者从中国科学院国家天文台获悉，中国科研团队在中国空间站巡天 空间望远镜科学数据仿真研究方面取得进展，标志着中国为这一旗舰级空间天文设施的科学研究做好了 准备，为其未来发射升空后产出原创性科学成果奠定了基础，相关研究由国际学术期刊《天文和天体物 理学研究》1月7日以专刊形式在线发表。 巡天空间望远镜同属于第四代巡天望远镜，是中国载人航天工程规划建设的大型空间天文设施，口径2 米，具有大视场、高像质、宽波段等特点，有望在宇宙学、星系、银河系、恒星以及行星等多个天体物 理领域取得重大科学发现。在望远镜发射前进行科学仿真，是确保重大科学目标实现的重要环节。为保 证中国空间站巡天空间望远镜科学产出的及时性和可靠性，科研团队针对望远镜的主光机和各个观测终 端，构建了一套端到端观测仿真套件，对观测数据实现了像素级的高质量仿真，将用于望远镜的整体性 能综合评估。 据了解，巡天空间望远镜是中国空间站的重要组成部分，发射升空后将与空间站共轨长期独立飞行，开 展巡天观测，短期停靠空间站进行补给和维护升级。 ...

紫金山天文台研究员季江徽表示，这项工作让我们对中国未来的系外行星直接成像观测能力有了清晰的 预期，为中国空间站巡天空间望远镜在系外行星探测这一前沿领域的科学产出提供了重要的技术保障。 清华大学天文系教授李成表示，成果论文完整而系统地展示了望远镜主巡天模块及各附属模块的仪器性 能和模拟仿真数据，为巡天空间望远镜发射前的数据处理系统研发和测试、科学预研究，以及发射后的 科学运行提供了可靠的数据保障。 据了解，巡天空间望远镜是中国空间站的重要组成部分，发射升空后将与空间站共轨长期独立飞行，开 展巡天观测，短期停靠空间站进行补给和维护升级。（完） 新华社北京1月7日电（记者胡喆）记者从中国科学院国家天文台获悉，我国科研团队在中国空间站巡天 空间望远镜科学数据仿真研究方面取得进展，标志着我国为这一旗舰级空间天文设施的科学研究做好了 准备，为其未来发射升空后产出原创性科学成果奠定了基础，相关研究由国际学术期刊《天文和天体物 理学研究》1月7日以专刊形式在线发表。 随着国际上第四代空间和地面巡天望远镜的陆续建造和投入运行，大量观测数据带领人类进入大数据天 文学时代。巡天空间望远镜同属于第四代巡天望远镜，是我国载人航天工程规 ...

Core Insights - A recent analysis by NASA indicates that global ground-based astronomy research may face significant threats from satellite light pollution over the next decade, with approximately 96% of images from low Earth orbit observations potentially affected [1][2] Group 1: Satellite Impact on Astronomy - The number of satellites in orbit has surged to 15,000, up from just 75 in 2019, primarily due to decreased launch costs [2] - Ground-based observations, such as those from NASA's Webb Telescope, may be disrupted by reflected light from these satellites, rendering images unusable for research [2] - Previous studies have focused on the impact of satellites on ground-based astronomy, but the effects on space telescopes have been largely overlooked [2] Group 2: Future Projections and Solutions - NASA's Ames Research Center simulated the field of view changes for four space telescopes at an altitude of 800 kilometers as satellite numbers increase, including NASA's Webb and SPHEREx, ESA's ARRAKIHS, and China's planned survey space telescope [2] - It is projected that 560,000 satellites will be operational in the future, potentially polluting 39.6% of images from the Webb Telescope and 96% of images from the other three telescopes [2] - The average number of satellites observed by the Webb Telescope is estimated to be 2.14, while SPHEREx may see 5.64, ARRAKIHS 69, and the survey telescope 92 [2] - A potential solution proposed is to deploy satellites in orbits lower than those of the telescopes, although this could negatively impact the Earth's ozone layer [2]

Core Insights - The increasing number of satellites in Earth's orbit is significantly impacting ground-based astronomical observations, with a recent study warning that about 96% of images from low Earth orbit space telescopes may be affected by satellite light pollution in the next decade [1][4] - The number of satellites has surged from 75 in 2019 to 15,000 currently, primarily due to reduced launch costs, which poses a threat to the effectiveness of space telescopes like NASA's James Webb Telescope [1][4] Summary by Sections - **Impact on Space Telescopes** - The study highlights that the light pollution from satellites could render images from space telescopes unusable for research purposes [1] - It is noted that previous research has focused on the effects of satellites on ground-based astronomy, while the impact on space telescopes has been largely overlooked [1] - **Current and Future Satellite Projections** - The research indicates that there are currently 15,000 satellites in orbit, with projections suggesting that this number could rise to 560,000 in the future [4] - The anticipated increase in satellites could lead to 39.6% of images from the James Webb Telescope being polluted, while other telescopes like SPHEREx, ARRAKIHS, and a proposed Chinese survey telescope could see 96% of their images affected [4] - **Observational Data** - The average number of satellites observed by various telescopes is projected as follows: James Webb Telescope (2.14), SPHEREx (5.64), ARRAKIHS (69), and the survey telescope (92) [4] - **Potential Solutions** - A suggested solution to mitigate the impact of satellite light pollution is to deploy satellites in orbits lower than those of space telescopes, although this could have adverse effects on the Earth's ozone layer [4]

Core Viewpoint - The recent shifts in the U.S. chip policy towards China reflect a complex interplay of competition and cooperation, driven by China's technological advancements and the need for U.S. companies to maintain market presence in China [1][4]. Group 1: U.S. Policy Changes - In April, the U.S. government prohibited NVIDIA from selling the H20 chip to China, but by July, the export approval was granted, indicating a reconsideration of the initial ban [1]. - The U.S. aims to balance its national security concerns with the economic necessity of engaging with the Chinese market, as losing access could accelerate China's technological independence [1][4]. Group 2: China's Technological Progress - China's progress in the optical instrument manufacturing sector serves as a historical parallel to its current advancements in the chip industry, showcasing resilience in the face of external restrictions [2][3]. - The development of competitive technologies in China, such as those from Huawei and Cambrian, indicates a growing capability to meet domestic demands while preparing for international expansion [4]. Group 3: Implications for the Industry - The concept of "marginal regulatory effect" suggests that as China develops comparable products, U.S. restrictions may ease to protect market interests, highlighting a dual focus on national security and economic gain [4]. - The approval of NVIDIA's H20 chip sales to China is seen as beneficial for both parties, allowing for resource optimization and mutual benefits in the tech landscape [4]. Group 4: Future Outlook - Despite external pressures, China's commitment to self-reliance and technological innovation remains strong, with ongoing developments in various fields such as space exploration and quantum communication [5]. - The trajectory of China's technological advancements suggests a future characterized by significant achievements and contributions to global technology [5].