Astrophysics is good

Milestones in Astrophysics

We can't directly interact with distant cosmic objects, but we can observe the radiation they emit, and much of astrophysics has to do with studying this radiation and working to explain the mechanisms behind it. The first ideas about the nature of stars emerged in the mid-19th century from the blossoming science of spectral analysis, an essential .

What is the difference between astronomy and physics?