noun🔗Share流星物質A relatively small (sand- to boulder-sized) fragment of debris in a star system that produces a meteor when it hits the atmosphere"The astronomy club discussed how a meteoroid becomes a meteor when it enters Earth's atmosphere and burns up. "天文クラブは、流星物質が地球の大気圏に入り燃え尽きると、どのようにして流星になるのかを話し合った。astronomyspacescienceChat with AIVocabulary GamePractice Reading
