kepeideu byeongwangseong
Cepheid variable
variable céphéide
케페이드 변광성은 우주 거리 측정에 중요한 역할을 합니다.
kepeideu byeongwangseong-eun uju geori cheugjeong-e jungyohan yeoghal-eul hamnida.
Cepheid variables play an important role in measuring cosmic distances.
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