Core Viewpoint - The Tianwen-2 mission aims to explore and sample asteroid 2016HO3 and subsequently conduct scientific exploration of main-belt comet 311P, marking China's first attempt at asteroid sample return and advancing deep space exploration [1][2][13]. Mission Overview - The Tianwen-2 mission is led by the National Space Administration of China, with a long and challenging implementation cycle of approximately 10 years, facing significant engineering risks and uncertainties [2][13]. - The mission consists of 13 flight phases, including launch, asteroid transfer, close approach, sampling, and return segments [13]. Launch Details - The Long March 3B rocket, known for its high payload capacity, successfully launched the Tianwen-2 spacecraft from the Xichang Satellite Launch Center on May 29, 2025 [1][4]. - This mission is the first time the Long March 3B rocket has executed a launch to escape Earth's gravitational pull, requiring a speed of at least 11.2 km/s [5][6]. Challenges Faced - The launch faced three main challenges: higher speed requirements, increased precision demands, and a narrower launch window [6][9]. - The launch window for the mission was limited to three days, with only four minutes available each day for a successful launch [9]. Technical Innovations - The mission has implemented various technical improvements, including enhanced payload capacity and precision tracking systems, to ensure successful launch and mission execution [10][11]. - The spacecraft is equipped with 11 scientific instruments for spectral measurement, optical imaging, and environmental detection, aimed at gathering valuable data during its journey [13][16]. Scientific Goals - The scientific objectives focus on determining the physical parameters of the asteroid and comet, including their orbital dynamics, composition, and internal structure [17]. - The mission aims to contribute to the understanding of the early solar system and the formation of celestial bodies, with particular emphasis on the unique characteristics of the target asteroid and comet [16][17].

Group 1 - The Tianwen-2 mission marks China's first interplanetary sample return mission, targeting asteroid 2016HO3 and comet 311P for scientific exploration and sample collection [1][2] - The mission aims to enhance understanding of the origins and evolution of small celestial bodies, with 2016HO3 potentially holding primordial information from the early solar system [2][3] - The Tianwen-2 spacecraft is equipped with 11 scientific payloads to study the morphology, composition, internal structure, and potential ejection materials of the targeted celestial bodies [2][3] Group 2 - The mission involves significant technical challenges, including long distances (2016HO3 is 18 to 46 million kilometers away, and 311P is 150 to 500 million kilometers away), which complicates communication and requires advanced orbital design and energy management [3] - The spacecraft must operate under weak gravitational conditions, making sample collection difficult, as the average diameter of 2016HO3 is approximately 41 meters and it is in a high-speed rotation [3][4] - The launch of the Long March 3B rocket required precise trajectory calculations, with a separation speed exceeding 11.2 kilometers per second and a deviation tolerance of less than 1 meter to ensure accurate orbital insertion [5]

Core Viewpoint - The successful launch of the Tianwen-2 probe marks China's first asteroid sample return mission, aiming to explore the near-Earth asteroid 2016HO3 and the main-belt comet 311P over a mission period of approximately ten years [4][11]. Group 1: Mission Overview - The Tianwen-2 mission is designed to visit two celestial bodies: the near-Earth asteroid 2016HO3 and the main-belt comet 311P, focusing on their morphology, material composition, internal structure, and potential ejections [3][11]. - The mission aims to enhance understanding of the origins and evolution of the solar system, as well as provide insights into Earth's evolutionary processes [12][13]. Group 2: Launch Details - The Tianwen-2 probe was successfully launched on May 29 at 1:31 AM from the Xichang Satellite Launch Center using the Long March 3B rocket, which is noted for its high reliability and performance [4][5]. - The Long March 3B rocket has a payload capacity of 5.55 tons to geostationary transfer orbit, making it suitable for the Tianwen-2 mission [5][7]. Group 3: Technical Aspects - The mission consists of 13 flight phases, including launch, asteroid transfer, close approach, sampling, and return to Earth, with the return capsule expected to land by the end of 2027 [8][9]. - The Tianwen-2 probe is equipped with 11 scientific payloads, including cameras, spectrometers, and radar, to conduct comprehensive studies of the target celestial bodies [13]. Group 4: Scientific Significance - The exploration of 2016HO3 is particularly valuable as it is a stable quasi-satellite of Earth, located approximately 18 to 46 million kilometers away, making it accessible for the mission [12]. - The main-belt comet 311P presents unique research opportunities due to its dual characteristics of asteroid-like orbits and comet-like physical features, which could provide insights into the formation of small celestial bodies [13].

Core Viewpoint - The successful launch of the Tianwen-2 probe marks a significant step in China's planetary exploration program, with missions to explore asteroid 2016HO3 and comet 311P, aiming to collect valuable samples and conduct in-depth scientific research [1][19]. Group 1: Mission Overview - The Tianwen-2 mission is set to last approximately 10 years, focusing first on the asteroid 2016HO3 for exploration and sample collection, followed by a mission to comet 311P [7][19]. - The Tianwen-2 probe is equipped with 11 scientific instruments, including a multi-spectral camera and thermal radiation spectrometer, to facilitate data collection during its journey [23]. Group 2: Technical Challenges - The launch required precise timing due to the changing relative positions of the target asteroid and Earth, with a narrow launch window of only 4 minutes [3]. - The mission's landing precision on the small asteroid is exceptionally demanding, requiring a landing radius of approximately 1 meter, which is significantly tighter than typical asteroid missions [17]. - The sampling process on the microgravity environment of the asteroid presents unique challenges, as the lack of gravity could cause samples to escape easily [15][17]. Group 3: Scientific Significance - Asteroid 2016HO3 is considered a "quasi-satellite" of Earth, maintaining a stable orbit relative to our planet, making it a unique target for study [9][11]. - The mission aims to gather insights into the early solar system's material composition and evolutionary history, as the asteroid retains primordial information from the solar system's formation [11][19]. Group 4: Broader Implications - The successful execution of the Tianwen-2 mission could enhance understanding of the relationship between asteroids and comets, contributing to the broader field of planetary science [21]. - The mission has garnered significant attention from both the scientific community and space enthusiasts, highlighting the public's interest in space exploration [25].

Group 1 - The "Spirit of Scientists" forum series aims to inspire young scientists and students by sharing the achievements and values of prominent scientists and engineers [2] - The event features discussions on key technological breakthroughs in radar technology and deep space exploration, emphasizing the importance of perseverance and innovation in scientific endeavors [1][2] - The forum encourages collaboration and knowledge sharing among young researchers, highlighting the significance of core technology breakthroughs in fields such as new energy vehicles [2] Group 2 - The event is organized by the National Science Ethics and Academic Style Construction Education Leading Group, showcasing the contributions of strategic scientists and leading technology figures [2] - Presentations include insights from experts in radar technology and space exploration, illustrating the historical context and future goals of China's space missions [1][2] - The discussions reflect a commitment to fostering a culture of scientific inquiry and exploration, with a focus on the values of teamwork and shared success in technological advancements [2]

Core Points - China's Tianwen-2 probe successfully launched on May 29, marking the country's first asteroid exploration and sample return mission [1][2] - The mission aims to explore and collect samples from asteroid 2016 HO3, with a planned return to Earth by the end of 2027 [7][8] Group 1: Mission Overview - The Tianwen-2 mission is a significant engineering project, described as a relay race, with the successful launch being the first leg [4] - The probe is equipped with 11 scientific payloads to enhance understanding of small celestial bodies [8] - The mission has a total duration of approximately 10 years, including subsequent exploration of main belt comet 311P [7] Group 2: Technical Details - The Long March 3B rocket, known for its reliability, executed its 109th mission and was specifically designed for this escape trajectory [14][16] - The launch required high precision, with the entry trajectory needing to be accurate to within 1 meter per second [21] - The design and preparation for the mission involved three times the usual workload due to the complexities of deep space exploration [23] Group 3: Challenges and Innovations - The Tianwen-2 mission is characterized by its high difficulty, long duration, and significant risks [8] - The rocket team faced challenges in optimizing the launch process and ensuring timely execution of the mission [20][18] - Innovations in guidance methods were implemented to meet the demands of deep space trajectory requirements [21]

由于小天体引力非常弱小，坚硬表面易造成探测器反弹，而松散表面又难以阻止探测器下陷，探测器的 控制必须精准。据介绍，探测器将采用"边飞边探边决策"的策略，从距离目标天体约2000千米开始，基 本自主开展目标天体精准捕获、逐步接近、科学探测和样品采集。 新华社西昌5月29日电（记者宋晨、刘祯）5月29日凌晨，西昌卫星发射中心，长征三号乙运载火箭托举 行星探测工程天问二号探测器直冲霄汉。 问天求索，我国首次小行星探测与采样返回之旅正式启程！ "追星"之旅，"第一棒"至关重要。本次任务是长征三号乙运载火箭首次执行地球逃逸轨道发射，对火箭 的入轨精度要求更高。"如果将火箭入轨比作投篮，这次的难度就像从上海投球到位于北京的篮筐中， 篮球不仅要准确入筐，还要以特定的角度和速度。"中国航天科技集团专家魏远明说。 配备精良装备，才能精准"问天"。中国航天科技集团专家陈春亮介绍，天问二号探测器上配置了中视场 彩色相机、多光谱相机等11台科学设备，助力探测器在飞行过程中对小行星和主带彗星进行探测，获取 科学数据。 天问二号任务设计周期10年左右，主要任务目标是对小行星2016HO3进行探测、取样并返回地球，此后 再对主带彗星311 ...

Group 1 - The world's first ultra-large marine engineering vessel with a cargo capacity exceeding 45,000 tons has been successfully delivered in Fujian, China. The vessel, named "WINDPIPER," was constructed by Fujian Mawei Shipbuilding Co., Ltd. for the Dutch company Boskalis [1] - SpaceX's Starship has received approval for its ninth test flight after a 77-day review by the FAA, which required the company to implement corrective measures identified during the investigation of a previous flight incident. The approved flight area has expanded significantly to 1,600 nautical miles [2] - Samsung Electronics plans to expand its 1c DRAM production capacity at its Hwaseong plant, with the investment expected to be completed by the end of this year. The first production line for 1c DRAM was established at the P4 site, with a planned capacity of 30,000 wafers per month [3] Group 2 - Shandong province has added eight new national intelligent manufacturing standard application pilot projects, including initiatives from Weichai Power and Tianyue Advanced Technology. The province aims to enhance digital transformation and establish numerous pilot enterprises and provincial-level "industrial brains" [4]

证券代码：603698 证券简称：航天工程 公告编号：2025-013 航天长征化学工程股份有限公司2024年年度权益分派 实施公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述或者重大遗 漏，并对其内容的真实性、准确性和完整性承担法律责任。 重要内容提示： ? 每股分配比例 A 股每股现金红利0.108元（含税） 本次利润分配方案经公司2025 年 4 月 25 日的2024年年度股东大会审议通过。 二、 分配方案 截至股权登记日下午上海证券交易所收市后，在中国证券登记结算有限责任公司上海分 公司（以下简称中国结算上海分公司）登记在册的本公司全体股东。 本次利润分配以方案实施前的公司总股本 535,990,000 股为基数，每股派发现金红利 三、 相关日期 | 股份类别 | 股权登记日 | | 最后交易日 | 除权（息）日 | 现金红利发放日 | | --- | --- | --- | --- | --- | --- | | Ａ股 | 2025/5/28 | － | 2025/5/29 | 2025/5/29 | | （1）对于持有公司无限售条件流通股的自然人股东及证券投资基金，根据《 ...

Core Points - The Trump administration's proposed budget for NASA for fiscal year 2026 includes a significant reduction of approximately 25%, from $24.8 billion to $18.8 billion, while the defense budget increases by 13% to a historic high of $1.01 trillion [1][2] - The budget shift indicates a strategic focus on manned missions to Mars, with $1 billion allocated specifically for Mars exploration, while other NASA projects will face cuts and restructuring [2][3] - Major adjustments to the Artemis program are expected, including the potential retirement of the Space Launch System (SLS) and Orion spacecraft, which have been criticized for their high costs and delays [3][5] Budget Cuts and Impacts - The budget for space and Earth sciences, as well as mission support, will see a nearly 50% reduction, dropping from $7.325 billion to $3.899 billion [6] - Planetary science funding will decrease from $2.7 billion to $1.929 billion, with the Mars sample return mission being canceled due to budget overruns and delays [6][12] - Earth science funding will be cut by over 50%, with the new generation land satellite project being entirely canceled [6][12] International Cooperation and Competition - The cancellation of the Lunar Gateway project and other international collaborations raises concerns about the U.S. losing its leadership in space exploration [12][13] - The shift towards commercial space companies like SpaceX for future missions may disrupt traditional partnerships and lead to a more fragmented global space landscape [10][15] - Critics argue that the budget cuts will hinder international cooperation and alter the competitive dynamics in the global space industry [15] Commercial Space Sector - The budget cuts for NASA may benefit private space companies, as funding for Mars missions is expected to flow towards commercial launch providers [8][10] - SpaceX is positioned to take over many of the roles previously held by traditional aerospace contractors, with its Starship system being more cost-effective than NASA's SLS [10][11] - The reliance on fixed-price contracts for commercial projects may challenge traditional defense contractors while benefiting companies like SpaceX [11] Scientific Research and Development - The significant budget reductions are expected to limit NASA's scientific research capabilities, with major projects facing termination [7][12] - The cuts could lead to a loss of talent in the aerospace sector, as funding shortages may drive scientists and researchers away from NASA [7] - The overall impact on scientific data and research output could slow advancements in understanding the universe [15]