註冊並分享邀請連結,可獲得影片播放與邀請獎勵。

Dr Marco Langbroek
@Marco_Langbroek
Lecturer optical Space Situational Awareness @AETUDelft. Spy sats, missiles, meteorites, asteroids. Asteroid (183294). Opinions my own
991 正在關注    22.8K 粉絲