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Tsync Tsync
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Posts: 3450
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8 years ago
Spiral arms are thought to be sites of ________, based on the observations of red HII regions and blue-white OB associations in and around these features.
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
Read 229 times
3 Replies
Minoring in physics
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RatatouilleRatatouille
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8 years ago
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Tsync Author
wrote...
8 years ago
Exactly what I needed Smiling Face with Open Mouth
Minoring in physics
wrote...
8 years ago
Slight Smile
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