This is the 8964th most frequent Korean word.
개기월식은
"개기월식은" means "total lunar eclipse."
In this sentence, '개기월식은' is used as the subject to describe the lunar eclipse.
개기월식은 밤하늘에서 볼 수 있는 아름다운 현상이다.
A total lunar eclipse is a beautiful phenomenon that can be observed in the night sky.
'개기월식은' here introduces the lunar eclipse as the topic being considered by people.
사람들은 개기월식은 신비로운 기적이라고 생각했다.
People considered the total lunar eclipse a mysterious miracle.
It is used here to specify tomorrow's event as the subject in a future context.