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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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Examples
Various factors counted against Halley when he was an applicant in 1691 for the Savilian astronomy professorship at Oxford University.
But at critical junctures in the history of astronomy, there is generally an overabundance of ideas on how to move ahead.
From a very early age, she read and wrote extensively about several subjects, principally astronomy.
The field of astronomy is enriched by the accessibility of several high-caliber airborne telescopes.
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.

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