Mnet M Countdown' Live broadcast Dictionary rearsal was held at CJ ENM Center in Sangam-dong, Mapo-gu, Seoul on the afternoon of January 17th.
GFriend (Wish, Yerin, Eunha, Yuju, SinB and Umji) attended the day.
About Eunha
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word is derived from the Greek galaxias, literally 'milky', a reference to the Milky Way galaxy that contains the Solar System.
 Wikipedia