Summary Data for 2018 April’s Comets Summary Data for 2018 April’s Comets. 2018년 4월 관측할만한 혜성들. http://cfile7.uf.tistory.com/original/993FEF365AC6461207865C 염범석. Bum-Suk Yeom. Credit: Bum-Suk Yeom, http://cometchasing.skyhound.com. 2018. 4. 6. 이전 1 다음