astronomical

/ˌæstrəˈnɑmɪkəl/
adjective
  1. Extremely large; enormous (often used to describe numbers, costs, or amounts).
    • She won an astronomical sum of money in the lottery and didn't know how to spend it.
    • The cost of the new stadium was astronomical, reaching over a billion dollars.
    • The number of stars in the universe is astronomical, far beyond what we can count.
  2. Relating to astronomy or the study of stars, planets, and space.
    • The telescope provided astronomical data that helped scientists map distant galaxies.
    • He bought an astronomical calendar to track the phases of the moon and planetary alignments.
    • The astronomical society meets every month to discuss new discoveries about black holes.
Synonyms
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