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2021年的诺贝尔物理学奖授予了最初由英国物理学家彼得·希果斯领导的LIGO联合大科学计划，以及被引入该领域的和平和理解的概念。 该计划旨在直接检测来自引力波源的引力波。它首次检测到引力波是在2015年，并在没过几年后实现了超过50次检测。这项发现是对爱因斯坦广义相对论的一次重大验证。诺贝尔物理学奖委员会称赞该成果“彻底改变了人类对时间和空间的理解。”
The 2021 Nobel Prize in Physics was awarded to the LIGO Scientific Collaboration, initially led by British physicist Peter Higgs, and for introducing the concept of peace and understanding into the field. The collaboration's goal was to directly detect gravitational waves from their sources, and it first detected them in 2015, achieving over 50 detections in the years that followed. This discovery was a significant validation of Einstein's theory of general relativity, and the Nobel Committee praised it for "revolutionizing humanity's understanding of time and space." 

Summary: The 2021 Nobel Prize in Physics was awarded to the LIGO Scientific Collaboration for detecting gravitational waves from their sources and validating Einstein's theory of general relativity, which revolutionized humanity's understanding of time and space.