Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
은하극은 우리 은하의 중심 방향을 나타냅니다.eunhageugeun uri eunha-ui jungshim banghyang-eul natanabnida.The galactic pole indicates the direction of the center of our galaxy.