Meaning of O star | Babel Free
Examples
“Vreux: I would like to ask Ann Underhill why, if there is another star by chance in the line of sight to SMC WR stars, it's an O star rather than, say, an A type?”
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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