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3. "Cosmos" subj

Alternative clues for the word astr

• One of the hard sciences: Abbr.
• Space science: Abbr.
• NASA subj
• Subj. for starry-eyed students
• Sci. branch
• Star: Prefix
• Sci. of stars, etc.
• Galaxy sci
• Kepler's subj
• Coll. major involving an observatory