特朗普要搞“星球大战2.0”，物理学家却说违反基本定律

Core Points - The "Golden Dome" missile defense system is proposed by President Trump, aiming to create the "best missile defense system in history" with nearly 100% protection against various missile threats [1][3][4] - The estimated cost of the project is approximately $175 billion, with a goal to be operational within three years [2][29] - The system intends to integrate existing missile defense systems and develop new technologies, including space-based interceptors and advanced sensors [14][21] Group 1: Project Overview - The "Golden Dome" project aims to construct a global, multi-layered missile defense system to intercept threats from various sources [5][13] - It is designed to counter six main types of missile threats, including intercontinental ballistic missiles, submarine-launched ballistic missiles, hypersonic weapons, cruise missiles, and orbital bombardment systems [6][12][22] Group 2: Technical Aspects - The proposed defense system will consist of three layers: a sensing layer for detection, a command and control network for decision-making, and a strike layer for interception [13][14] - The system is expected to require the deployment of approximately 1,000 satellites for effective monitoring and tracking of incoming missiles [14][27] Group 3: Historical Context - The "Golden Dome" plan is compared to the "Star Wars" initiative from the Reagan era, which aimed to develop a comprehensive missile defense system but was ultimately terminated due to high costs and technological challenges [19][21] - Similarities include the strategic goal of creating a layered defense system and the reliance on space-based technologies [24][25] Group 4: Industry Implications - The project has garnered interest from major defense contractors like Lockheed Martin and Raytheon, who are developing solutions to support the initiative [29][30] - The potential long-term costs of the "Golden Dome" system could exceed $500 billion, raising concerns about its financial viability [24][30] Group 5: Expert Opinions - Experts express skepticism regarding the feasibility of achieving near 100% interception rates, citing physical laws and the complexity of intercepting advanced missile technologies [31][32] - The American Physical Society has raised concerns about the practicality of the proposed technologies, suggesting that the challenges may lead to a fate similar to that of the "Star Wars" program [31][32]