astronomy
/əs'trɔnəmi/
Definition
- Noun:
- The scientific study of celestial objects, space, and the physical universe as a whole: Astronomy is the branch of science that deals with the observation and theoretical understanding of stars, planets, galaxies, comets, and other phenomena beyond Earth's atmosphere.
Usage
- Astronomy is a fundamental science that seeks to understand the origin, evolution, and physical properties of everything in the cosmos.
- It is distinct from astrology, which is not a science but a belief system.
- The word is typically used as a non-count noun referring to the field of study.
Examples
- Noun:
- She decided to major in astronomy because of her fascination with black holes.
- Advances in astronomy have dramatically changed our understanding of the universe's age.
- The new telescope will be a powerful tool for astronomy.
Advanced Usage
- "Observational astronomy": The practice of recording data about the universe using telescopes and other instruments.
- His work in observational astronomy led to the discovery of several exoplanets.
- "Theoretical astronomy": The development of models and computer simulations to explain astronomical observations.
- Theoretical astronomy helps us understand the physics of neutron stars.
Variants and Related Words
- Astronomer (n): A scientist who studies astronomy.
- The astronomer published a paper on galaxy formation.
- Astronomical (adj):
- Relating to astronomy.
- The conference discussed the latest astronomical data.
- (Informal) Extremely large.
- The cost of the project was astronomical.
Synonyms
- Stargazing (n): The act of observing the stars, often as a hobby. (Note: This is less formal and scientific than astronomy.)
- Cosmology (n): The scientific study of the origin, evolution, and eventual fate of the universe. (Note: Cosmology is a subfield of astronomy focused on the universe as a whole.)
Related Phrases
- Radio astronomy: A subfield of astronomy that studies celestial objects by observing their radio wave emissions.
- Radio astronomy allows us to see through cosmic dust clouds.
- Amateur astronomy: The observation of celestial objects by non-professionals as a hobby.
- Amateur astronomy clubs are popular worldwide.
Noun
-
the branch of physics that studies celestial bodies and the universe as a whole
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