How can the other galaxies be used as prototypes to help classify the Milky Way?

1 Answer
Jun 16, 2018

They can be used as either comparisons or templates.


Much of scientific observation is about comparison. So, looking at other galaxies with the advantages of distance and perspective can provide similarities and differences to the observation of our own galaxy.

Noticing different sizes, shapes and component parts can be used to better define the likely composition and shape of our own galaxy.