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
지구는 태양에 가장 가까운 지점인 근일점에서 빠르게 움직입니다.Jigu-neun taeyang-e gajang gakkaun jijeom-in geuniljeom-eseo ppaleuge umjigimnida.The Earth moves quickly at the perihelion, the point closest to the Sun.