二战后，《联合国宪章》确立的主权平等原则与1975年《赫尔辛基最后文件》的边界规定，使全球领土变更趋于停滞，而地球资源枯竭危机则迫使国家行为体转向最后的前沿领域——外层空间。物理疆界的闭合与资源稀缺性的加剧，共同构成外空探索的历史必然性。外空资源的价 ...

BEIJING, Aug. 8 (Xinhua) -- This summer vacation, an immersive light show inspired by the ancient Chinese myth of the "Classic of Mountains and Seas," has captivated young audiences at Beijing Fun, a ...