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]

Note: Its observations were traditionally made with the spectroscope, bolometer, etc., usually in connection with the telescope. In modern times, radiotelescopes, infrared telescopes, X-ray and gamma ray detectors and neutrino detection equipment located deep underground are all put into service to observe and test theories about astronomical phenomena. [Webster 1913 Suppl. +PJC] ||

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

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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

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