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www.merriam-webster.com/dictionary/astronomy

Astronomy definition is - the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties. The Difference Between ...

www.space.com/16014-astronomy.html

Sep 8, 2017 ... Definition of astronomy: Astronomy is the study of the sun, moon, stars, planets, comets, gas, galaxies, gas, dust and other non-Earthly bodies ...

www.dictionary.com/browse/astronomy

noun. the science that deals with the material universe beyond the earth's atmosphere. QUIZZES. QUIZ YOURSELF ON ...

en.wikipedia.org/wiki/Astronomy

Astronomy is a natural science that studies celestial objects and phenomena. It uses ... Based on strict dictionary definitions, "astronomy" refers to "the study of...

www.britannica.com/science/astronomy

Astronomy, science that encompasses the study of all extraterrestrial objects and phenomena. Since the late 19th century, astronomy has expanded to include ...

dictionary.cambridge.org/us/dictionary/english/astronomy

astronomy meaning: 1. the scientific study of the universe and of objects that exist naturally in space, such as the…. Learn more.

www.yourdictionary.com/astronomy

The definition of astronomy is the scientific study of matter outside of the atmosphere of the Earth including stars, planets and what they are made of and how ...

www.collinsdictionary.com/us/dictionary/english/astronomy

Astronomy is the scientific study of the stars, planets, and other natural objects in space. COBUILD Advanced English Dictionary. Copyright © HarperCollins ...

www.vocabulary.com/dictionary/astronomy

Astronomy is the science that looks up: at stars, at other planets, at solar systems, at galaxies, and at everything else in the universe.

www.lexico.com/en/definition/astronomy

What is the definition of astronomy? What is the meaning of astronomy? How do you use astronomy in a sentence? What are synonyms for astronomy?