AaS! 218: How Do We Know What the Milky Way Looks Like‪?‬ Ask a Spaceman!

Why is it so hard to get a picture of the Milky Way? How much of our galaxy have we mapped? What the heck is a “barred spiral” and what does that have to do with our core? I discuss these questions and more in today’s Ask a Spaceman!
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Thanks to Cathy Rinella for editing.
Hosted by Paul M. Sutter.