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- DictionaryAs·tron·o·my/əˈstränəmē/
noun
- 1. the branch of science which deals with celestial objects, space, and the physical universe as a whole.
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2 days ago · Astronomy is the science of studying all extraterrestrial objects and phenomena, from the solar system to the universe. Learn about the history, methods, and achievements of astronomy, as well as the challenges and limitations of observing the cosmos.
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets.
Learn the difference between astronomy and astrology, and see examples of astronomy in a sentence. Astronomy is the science of the heavenly bodies and their sizes, motions, and composition.
Jul 25, 2023 · Astronomy is the scientific study of the universe using mathematics, physics, and chemistry. History of astronomy: The beginnings.
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.
Learn the basics of astronomy, the study of everything in the universe beyond Earth's atmosphere. Explore the big ideas of astronomy, such as patterns, distances, motion, gravity, light, and invisible stuff, with activities and examples.
Astronomy is the scientific study of the universe and of objects that exist naturally in space, such as the moon, the sun, planets, and stars. Learn more about astronomy from Cambridge Dictionary, including its history, branches, and applications.
