Group 1 - The White House has withdrawn the nomination of Jared Isaacman as the NASA Administrator, which was initially proposed by Trump in December last year [1][3] - The Senate committee had approved Isaacman's nomination in late April, but the full Senate vote was pending [1][3] - The withdrawal is attributed to Isaacman's past donations to prominent Democrats, indicating potential political implications [1][3] Group 2 - NASA is currently facing a crisis, with the proposed budget for fiscal year 2026 suggesting a 25% cut to NASA's budget and potential layoffs of thousands of employees [3] - The cancellation of Isaacman's nomination may lead to a leadership vacuum at NASA, causing delays in decision-making and affecting the agency's operations [4] - Isaacman's potential leadership was expected to push NASA towards commercial procurement and efficiency, but his withdrawal introduces uncertainty in strategic direction [4][5] Group 3 - The Artemis program's implementation path may revert to using Boeing's Space Launch System (SLS) rocket, as Isaacman's departure raises questions about the future of the program [4] - Isaacman had advocated for increased scientific missions, contrasting with Trump's budget cuts to science projects, which may now face greater financial pressure [4] - The relationship between NASA and commercial space companies like SpaceX may remain unchanged or face new variables due to the withdrawal of Isaacman's nomination [5] Group 4 - Steven Kwast, a retired Air Force major general, is a leading candidate to replace Isaacman, with the next NASA head expected to fully support Trump's "America First" agenda [5][6]

1. 【"星舰"第八次试射爆炸原因查明，即将第九次发射】据美国"太空"网站25日报道，美国太空探索 技术公司（SpaceX）公布了"星舰"超重型火箭第八次试射失败的原因——发动机故障导致的连锁反 应，最终引发火箭空中自毁爆炸。报道称，美国联邦航空管理局（FAA）已经认可该事故调查报告， 并批准后续的飞行试验。如果一切顺利，"星舰"的第九次试射最早将于美国当地时间27日进行。（环 球网） 2. 【消息称台积电已预约1.2纳米先进制程厂址】5月26日，有消息称，台积电已向南科园区管理部门 预约沙仑生态科学园区（南科台南园区四期）一半土地，作为未来1.2纳米先进制程的建厂基地。南 科园区管理部门表示，沙仑生态科学园区目前处于筹设计划阶段，预估2027年下半年可以取得开发许 可。对于台积电是否已提出土地需求，或园区已先行预留给台积电设厂，南科园区管理部门称，以台 积电公告为准。（ 科创板日报） 4.【中国信通院牵头完成ITU-R 5G卫星技术规范】 4月30日—5月6日，国际电信联盟无线电通信局卫 星研究组（ITU-R SG4）WP4B第56次全会在上海召开。中国信通院牵头，联合中信科移动通信技术 股份有限公司、中国 ...

Core Insights - SpaceX's Starship Super Heavy rocket experienced its eighth test flight failure due to engine malfunctions leading to a chain reaction that resulted in the rocket's self-destruction in mid-air [1][3] - The Federal Aviation Administration (FAA) has approved the investigation report and subsequent flight tests, with the ninth test flight scheduled for May 27 [1][4] Group 1: Test Flight Failures - The Starship's previous test flights have garnered significant attention, but both of its attempts in 2023 ended in failure [1] - The seventh test flight on January 17 saw the Starship spacecraft lose control during re-entry, leading to self-destruction due to high vibration intensity causing fuel leakage and fire [1] - The eighth test flight on March 6 faced a similar fate, with the first stage successfully recovering but the spacecraft disintegrating mid-air [1][3] Group 2: Investigation Findings - The investigation report indicated that the failure during the eighth test was due to a hardware fault in the central engine, causing unintended mixing and ignition of propellants [3] - The report highlighted that the failure was not the same as the previous test, with a "flash" event occurring in the engine center leading to a shutdown of one engine and subsequent failures in adjacent engines [3] Group 3: Remedial Actions - SpaceX's corrective plan includes increasing preload at critical connections, optimizing propellant discharge systems, and introducing a new generation of engines to enhance reliability [3] - The first stage of the Starship successfully recovered but experienced issues with two engines failing during the retrofire phase and one during landing, attributed to localized overheating [3] Group 4: Upcoming Test Flight - The ninth test flight will take place at Boca Chica, Texas, with plans to test multiple objectives, including deploying eight prototype Starlink satellites [4] - For this mission, SpaceX will not attempt the previously validated pinpoint landing and recovery of the first stage, opting instead for a soft landing in the Gulf of Mexico [4]