Last Updated：2025/12/02
Sentence
天文学者たちは、老化した赤色巨星で予期せぬ複数のヘリウム核フラッシュを観測し、それが表面組成を変化させた。
Quizzes for review
Astronomers observed unexpected helium flashes in the aging red giant that altered its surface composition.
See correct answer
Astronomers observed unexpected helium flashes in the aging red giant that altered its surface composition.
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