2021년 2월의 천체 관측 대상들 Celestial objects to observe in February 2021 2021년 2월의 천체 관측 대상들. Celestial objects to observe in February 2021. 염범석. Bum-Suk Yeom. http://cometsky.com/astronews/2021_02_feb_skyobject_med_bsyeom.jpg Large photo: http://cometsky.com/astronews/2021_02_feb_skyobject_large_bsyeom.jpg 2021. 2. 2. 이전 1 다음