43台望远镜落地赛什腾山,冷湖建成全球规模最大天文观测集群#国之重器 43 telescopes settled on Saishiteng Mountain, forming the world’s largest astronomical observation cluster in Lenghu. #NationalInfrastructure 幸福小筑(💯互Fo❗️❗️) @mengwei73526359 · 2026-06-14