What is the density of young stars generally encountered during a Galactic orbit when situated in the Orion Spur compared to a main arm?
Answer
Fewer concentrated nurseries of O and B-type stars
Being located in the secondary structure of the spur means traversing fewer concentrated nurseries of massive stars during a Galactic orbit compared to residing within a main arm.
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What Is The Orion Arm Of The Milky Way? - Physics Frontier - YouTube
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