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3. Galileo's sci

Alternative clues for the word astr

• Hubble's sci
• One of the hard sciences: Abbr
• Sci. of the stars
• Heavens: Prefix
• Solar-system sci
• Sagan's specialty: Abbr.
• Copernicus's field: Abbr.
• Sagan's specialty (Abbr.)
• Star: Prefix
• Carl Sagan's sci