Core Viewpoint - The article highlights NASA's recent decision to prohibit Chinese citizens holding U.S. visas from participating in its projects, reflecting escalating tensions in the U.S.-China space race and concerns over national security [1][3]. Group 1: NASA's Actions - NASA has confirmed the implementation of internal actions restricting access for Chinese citizens, including limitations on physical and cybersecurity access to its facilities and networks [3]. - Previously, Chinese citizens with U.S. visas could participate in NASA's research as contractors, graduate students, or university researchers, but this access has now been revoked [1][3]. Group 2: U.S.-China Space Competition - Both the U.S. and China plan to complete manned lunar missions within the next five years, intensifying the competition between the two nations [3]. - NASA's recent statements indicate a heightened concern over the possibility of China landing on the moon before the U.S., showcasing a sense of urgency and anxiety within the agency [3]. Group 3: Expert Commentary - An expert from the Diplomatic Academy noted that China's rapid advancements in aerospace have created unprecedented pressure on the U.S., revealing a lack of confidence and anxiety in the U.S. regarding technological competition [3]. - The expert criticized the U.S. approach of using exclusionary measures to maintain its technological edge, arguing that such actions could hinder innovation rather than promote it [3].

NASA发言人史蒂文斯证实该机构采取了上述举措。史蒂文斯说："NASA已针对中国公民采取了内部行动，包括限制对我们设施、材料和网络的 物理和网络安全访问，以确保我们工作的安全。" 【环球时报报道 记者 李萌】"随着中美两国竞相登月，华盛顿的反华言论不断升级。"彭博社10日报道称，知情人士透露，美国国家航空航天局 （NASA）已禁止持有美国签证的中国公民参与该机构的项目。 美媒称，尽管NASA一贯限制聘用中国公民，但过去持有美国签证的中国公民仍能以合同工、研究生或大学科研人员的身份参与该机构的研究工 作。知情人士称，5日，持有美国签证的中国公民被拒绝访问NASA的数据系统，并被禁止参加与他们工作相关的线上或线下会议。"由于该决定 属于机密，这些知情人士不愿透露姓名。"彭博社称。 中国和美国都计划在未来5年内完成载人登月任务，随着任务期限临近，美方在炒作中美月球竞赛方面动作频繁。据彭博社报道，面对"中国可能 将先于美国登陆月球"的提问，NASA代理局长肖恩·达菲日前放话称，如果这种情况真的发生，"我真该死"。 外交学院教授李海东11日接受《环球时报》记者采访时表示，中国在航空航天领域的快速崛起，使美国感到了前所未 ...