2021-11-14 宇宙企業/団体が2030年までに軌道上デブリを削減する計画を作成するNet Zero Space initiativeを宣言 業界 SpacePolicy Online(11/13) SpaceNews(11/12) Arianespace Astroscale CGSTL/Chang Guang Satellite the French space agency CNES the European Union’s Space Surveillance and Tracking (EU SST) consortium Eutelsat the International Institute of Air and Space Law at the University of Leiden Isispace Planet Share my Space, and SpaceAble