astrophysics


astrophysics
astrophysical, adj.astrophysicist /as'troh fiz"euh sist/, n.
/as'troh fiz"iks/, n. (used with a sing. v.)
the branch of astronomy that deals with the physical properties of celestial bodies and with the interaction between matter and radiation in the interior of celestial bodies and in interstellar space.
[1885-90; ASTRO- + PHYSICS]

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Branch of astronomy concerned mainly with the properties and structures of cosmic objects, including the universe as a whole.

Starting in the 19th century, spectroscopy and photography were applied to astronomical research, making it possible to study the brightness, temperature, and chemical composition of cosmic objects. It was soon realized that the properties of these bodies could be fully understood only in terms of the physics of their atmospheres and interiors. X-ray astronomy, gamma-ray astronomy, infrared astronomy, ultraviolet astronomy, and radio and radar astronomy are all basically concerned with extending electromagnetic coverage beyond the visible spectrum to constrain the physical characteristics of astronomical objects.

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      branch of astronomy concerned primarily with the properties and structure of cosmic objects, including the universe as a whole. See astronomy.

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Universalium. 2010.

Look at other dictionaries:

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  • Astrophysics — As tro*phys ics, n. [Astro + physics.] (Astron.) The science treating of the physical characteristics of the stars and other heavenly bodies, their chemical constitution, light, heat, atmospheres, etc. It is a branch of astronomy. [1913 Webster]… …   The Collaborative International Dictionary of English

  • astrophysics — ► PLURAL NOUN (treated as sing. ) ▪ the branch of astronomy concerned with the physical nature of celestial bodies. DERIVATIVES astrophysical adjective astrophysicist noun …   English terms dictionary

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  • astrophysics — [[t]æ̱stroʊfɪ̱zɪks[/t]] N UNCOUNT Astrophysics is the study of the physical and chemical structure of the stars, planets, and other natural objects in space …   English dictionary

  • astrophysics — astrofizika statusas T sritis fizika atitikmenys: angl. astrophysics vok. Astrophysik, f rus. астрофизика, f pranc. astrophysique, f; physique astronomique, f …   Fizikos terminų žodynas

  • astrophysics — noun plural but singular or plural in construction Etymology: International Scientific Vocabulary Date: 1890 a branch of astronomy dealing especially with the behavior, physical properties, and dynamic processes of celestial objects and phenomena …   New Collegiate Dictionary

  • astrophysics — noun The branch of astronomy or physics that deals with the physical properties of celestial bodies and with the interaction between matter and radiation in celestial bodies and in the space between them …   Wiktionary

  • astrophysics — Synonyms and related words: Newtonian physics, acoustics, aerophysics, applied physics, astrogeology, astrognosy, astrography, astrolithology, astronomy, astrophotography, basic conductor physics, biophysics, celestial mechanics, chemical physics …   Moby Thesaurus


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