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• one light-day 뜻｜보이저 1호가 하루 만에 갔다는 뜻일까? NASA 원문에서 표현 찾기 This month, NASA’s Voyager 1 spacecraft will reach a historic milestone, becoming the first human-made object to travel one light-day from Earth. blog.naver.com · 2026.11.03