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astrophysics

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The definition of astrophysics is a branch of astronomy that studies the composition and origin of objects in outer space along with the way they interact with each other and other matter.

(noun)

A person who studies black holes, dark matter, and cosmic strings is an example of a person who is involved with astrophysics.

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See astrophysics in Webster's New World College Dictionary

noun

the main branch of astronomy which deals primarily with the physical properties of the universe, including luminosity, density, temperature, and chemical composition

Related Forms:

astrophysical adjective
astrophysicist noun

See astrophysics in American Heritage Dictionary 4

noun (used with a sing. verb)

The branch of astronomy that deals with the physics of stellar phenomena.

Related Forms:

asˌtro·physˈi·cal adjective

asˌtro·physˈi·cist (-fĭzˈĭ-sĭst) noun

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