# astrophysics

/ˌæstɹoʊˈfɪzɪks/ (US) · /ˌæstɹəfˈɪzɪks/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/astrophysics
Updated: 2026-05-18

## Definition

the study of the physical processes that happen in space. It looks at things like stars, planets, and galaxies to understand how they work.

For teachers: the branch of astronomy that applies the laws of physics to the study of celestial objects and phenomena.

## Examples

- She wants to study astrophysics at university.
- The university offers a specialized degree in astrophysics for students interested in the physics of the universe.
- Modern astrophysics relies heavily on high-powered telescopes and complex computer models to simulate the behavior of black holes and the expansion of the universe.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.