- 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.
A person who studies black holes, dark matter, and cosmic strings is an example of a person who is involved with astrophysics.
astrophysics definition by Webster's New World
the main branch of astronomy which deals primarily with the physical properties of the universe, including luminosity, density, temperature, and chemical composition
astrophysics definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun (used with a sing. verb)
The branch of astronomy that deals with the physics of stellar phenomena.
- asˌtro·physˈi·cal adjective
- asˌtro·physˈi·cist noun
astrophysics - Cultural Definition
The New Dictionary of Cultural Literacy Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
astrophysics - Science Definition
The branch of astronomy that deals with the physical and chemical processes that occur in stars, galaxies, and interstellar space. Astrophysics deals with the structure and evolution of stars, the properties of interstellar space and its interactions with systems of stars, and with the structure and dynamics of clusters of stars such as galaxies.