- 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 astrophysicist
I admire Neil deGrasse Tyson, the astrophysicist and author of Space Chronicles and Inexplicable Universe.Vilified Bitcoin Tycoon After Losing $500 Million: My Life Is at Risk
September 17, 2014
Thanks to astrophysicist extraordinaire Katherine Mack for helpful discussions in putting this article together.Laniakea: The Milky Way’s Place in the Heavens
Matthew R. Francis
September 7, 2014
An astrophysicist with a poetic sensibility, she hooked me in our first interview with her direct manner and determination.Lynn Sherr: Sally Ride’s Heroic and Trailblazing Life as an Astronaut
July 24, 2012
David Sumner, an American, is an astrophysicist with a grant to do research.The Power of 'Straw Dogs'
September 19, 2011
Chances were there was no astrophysicist nearer than Ganymede.Rip Foster in Ride the Gray Planet
Harold Leland Goodwin
If Mars were incandescent, we should appeal to the astrophysicist for information2 regarding its chemical composition.Mars and its Mystery
Edward Sylvester Morse
The astrophysicist continued, at considerable length, to establish the position of Ceti II to his own complete satisfaction.Eight Keys to Eden
Mark Irvin Clifton
- (functioning as singular) the branch of physics concerned with the physical and chemical properties, origin, and evolution of the celestial bodies
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for astrophysicist
Online Etymology Dictionary, © 2010 Douglas Harper
- 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.
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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.