Thanks to astrophysicist extraordinaire Katherine Mack for helpful discussions in putting this article together.
David Sumner, an American, is an astrophysicist with a grant to do research.
I admire Neil deGrasse Tyson, the astrophysicist and author of Space Chronicles and Inexplicable Universe.
An astrophysicist with a poetic sensibility, she hooked me in our first interview with her direct manner and determination.
If Mars were incandescent, we should appeal to the astrophysicist for information2 regarding its chemical composition.
Chances were there was no astrophysicist nearer than Ganymede.
The astrophysicist continued, at considerable length, to establish the position of Ceti II to his own complete satisfaction.
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.