Astrophysics
Astrophysics, branch of astronomy concerned primarily with the properties and structure of cosmic objects, including the universe as a whole. See astronomy.
The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Meg Matthias.
Citation Information
Article Title:
Astrophysics
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
09 November 2026
Access Date:
November 13, 2026