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3. Observatory observer: Abbr.

Alternative clues for the word astr

• Tycho Brahe's sci
• Subj. for Carl Sagan
• Heavenly field?: Abbr.
• Carl Sagan's subj.
• Copernicus's field: Abbr.
• Kepler's subj
• One of the hard sciences: Abbr.
• Palomar sci
• Sci. of the stars
• Study of the heavens: Abbr.