what is the meaning of astronomy?

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Astronomy is the scientific study of celestial objects, such as stars, planets, galaxies, and other phenomena that exist beyond Earth's atmosphere. It involves the observation and analysis of these celestial objects to better understand their properties, formations, and interactions. To understand the meaning of astronomy, one can break it down into its two components: "astro," which refers to celestial, and "nomy," which means laws or rules. Therefore, astronomy can be interpreted as the study of the laws or rules governing celestial objects. To learn more about astronomy, one can explore books, websites, or take courses that cover the subject. Observing the night sky with the naked eye or using telescopes can also be a great way to deepen your understanding of astronomy.

http://en.wikipedia.org/wiki/Astronomy