Add some examples in the text description

Author: cgobat

topics/astrophysics/index.md

@@ -2,8 +2,8 @@
 display_name: Astrophysics
 short_description: Astrophysics is the study of the physics of astronomical objects and processes.
 topic: astrophysics
-related: astronomy, physics
+related: astronomy, physics, cosmology
 wikipedia_url: https://en.wikipedia.org/wiki/Astrophysics
 ---
 
-Astrophysics is the scientific discipline that deals with the physics of objects, phenomena, and processes in [outer space](https://en.wikipedia.org/wiki/Outer_space) and the Universe.
+Astrophysics is the scientific discipline that deals with the physics of objects, phenomena, and processes in [outer space](https://en.wikipedia.org/wiki/Outer_space), including (but not limited to) stars, galaxies, compact objects, and the formation of the Universe.