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What does astronomy mean?

Looking for the meaning or definition of the word astronomy? Here's what it means.

Noun
  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.
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These millimeter wave frequencies have been used for radio astronomy, space-based cloud imaging, and various military applications.
Various factors counted against Halley when he was an applicant in 1691 for the Savilian astronomy professorship at Oxford University.
His terrific presentation on radar astronomy of asteroids included handing out models of the asteroid 216 Kleopatra to the audience.
Allen said that the project was an opportunity to search for intelligent life beyond the solar system while doing conventional radio astronomy.
The field of astronomy is enriched by the accessibility of several high-caliber airborne telescopes.
Subjects taught at the whare wananga included astronomy, genealogy, and natural medicine.

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