• (America) IPA: /əˈstɹɑnəˌmi/, /æˈstɹɑnəˌmi/

astronomy (uncountable)

  1. The study of the physical universe beyond the Earth's atmosphere, including the process of mapping locations and properties of the matter and radiation in the universe.
  2. (obsolete) Astrology.
    • 1609, William Shakespeare, Sonnet 14:
      Not from the stars do I my judgment pluck;
      And yet methinks I have astronomy ...
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