Astrophysics


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.
Contemporary Examples

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’ Asawin Suebsaeng November 13, 2014

Historical Examples

The subject of astrophysics does not admit of so definite a subdivision as that of Astrometry.
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 Various

During these years Professor Langley devoted a great deal of time and thought to astrophysics.
Heroes of To-Day Mary R. Parkman

“I’m positive, Commander,” replied the beautiful young doctor of astrophysics.
The Space Pioneers Carey Rockwell

“Well, the astrophysics computer I worked with at the University occupies a total of about one million cubic feet,” Conn began.
Graveyard of Dreams Henry Beam Piper

There are others that are difficult to explain, unless you have a good background in astrophysics, Rick.
The Egyptian Cat Mystery Harold Leland Goodwin

A limit is placed on our knowledge of astrophysics which, up to the present time, we have found no means of overstepping.
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 Various

Admittedly, he didn’t have much knowledge of astrophysics or radio astronomy.
The Egyptian Cat Mystery Harold Leland Goodwin

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

noun
(functioning as sing) the branch of physics concerned with the physical and chemical properties, origin, and evolution of the celestial bodies
astrophysics
(ās’trō-fĭz’ĭks)
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 branch of astronomy devoted to the study of the physical characteristics and composition of objects in the sky. Typical concerns of astrophysics are how much light the stars give off and the size, mass, and temperature of planets and stars.

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