- 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.
Origin of astrophysics
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for astrophysics
Obviously, Interstellar is a movie, not a three-hour advanced course in astrophysics.Meet Kip Thorne, the Man Who Crafted the Artful Science of ‘Interstellar’
November 14, 2014
Roger covered electronics, astrophysics, astrogation, and allied fields.The Space Pioneers
During these years Professor Langley devoted a great deal of time and thought to astrophysics.Heroes of To-Day
Mary R. Parkman
Astrophysics is a science still at the outset of a magnificent career.A Popular History of Astronomy During the Nineteenth Century
Agnes M. (Agnes Mary) Clerke
He faded out his own office, and was immediately replaced by an astrophysics laboratory.Eight Keys to Eden
Mark Irvin Clifton
There are others that are difficult to explain, unless you have a good background in astrophysics, Rick.The Egyptian Cat Mystery
Harold Leland Goodwin
- (functioning as singular) the branch of physics concerned with the physical and chemical properties, origin, and evolution of the celestial bodies
- 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.