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
작은유성의 충돌이 지구에 큰 영향을 미칠 수 있다.jageun-yuseong-ui chungdol-i ji-gu-e keun yeonghyang-eul michil su itda.The collision of an asteroid can have a significant impact on Earth.