51Թ

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astronomy

[uh-stron-uh-mee]

noun

  1. the science that deals with the material universe beyond the earth's atmosphere.



astronomy

/ əˈٰɒəɪ /

noun

  1. the scientific study of the individual celestial bodies (excluding the earth) and of the universe as a whole. Its various branches include astrometry, astrodynamics, cosmology, and astrophysics

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

astronomy

  1. The scientific study of the universe and the objects in it, including stars, planets, nebulae, and galaxies. Astronomy deals with the position, size, motion, composition, energy, and evolution of celestial objects. Astronomers analyze not only visible light but also radio waves, x-rays, and other ranges of radiation that come from sources outside the Earth's atmosphere.

astronomy

  1. The science that deals with the universe beyond the Earth. It describes the nature, position, and motion of the stars, planets, and other objects in the skies, and their relation to the Earth.

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51Թ History and Origins

Origin of astronomy1

First recorded in 1175–1225; Middle English astronomie, from Anglo-French, from Latin astronomia, from Greek; equivalent to astro- + -nomy
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51Թ History and Origins

Origin of astronomy1

C13: from Old French astronomie, from Latin astronomia, from Greek; see astro- , -nomy
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Example Sentences

Examples have not been reviewed.

The current theories of astronomy can't explain why the planets, stars and galaxies came into existence.

From

As he puts it, centuries ago, we believed we were at the centre of the Universe and with each discovery in astronomy we have found ourselves "more displaced" from that point.

From

Price told Salon in a video interview that he enjoyed amateur astronomy as a child and plans to travel to a noted dark sky preserve in the Pennsylvania wilds.

From

As well as brightening the sky and interfering with astronomy through their flashes and radio waves, satellites pollute the atmosphere on launch and on re-entry, as research from last October underscored.

From

In late January, Columbia University issued a statement after a graduate student inserted information about the practice of astronomy in Palestine into a set of lab notes for an astronomy course.

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