Hellow guys, Welcome to my website, and you are watching [2022년 동계 교원천문연수] 5. 우주로부터의 위험, 우주위험감시(최은정 연구원). and this vIdeo is uploaded by 한국천문연구원(KASI) at 2022-02-21T17:37:12-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
