(n.) The science treating of the physical characteristics of the stars and other heavenly bodies, their chemical constitution, light, heat, atmospheres, etc.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). astrophysics. Retrieved September 25, 2026, from http://smartdefine.org/astrophysics/definitions/1976697 |
| Chicago | Webster's. 2011. "astrophysics" http://smartdefine.org/astrophysics/definitions/1976697 (accessed September 25, 2026). |
| Harvard | Webster's 2011, astrophysics, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/astrophysics/definitions/1976697>. |
| MLA | Webster's. "astrophysics" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/astrophysics/definitions/1976697> |