From the April 2009 issue

Ask Astro web extra: What is the difference between astronomy and astrophysics?

Associate Editor Daniel Pendick explains how astrophysics is a smaller specialty in the greater field of astronomy.
By | Published: April 27, 2009 | Last updated on May 18, 2023
Cassiopeia A
Cassiopeia A is among the best-studied supernova remnants. While astronomy is the scientific study of all celestial objects, astrophysics is specifically a study of the physical workings of celestial objects like Cassiopeia A.
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