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courtneyjuma courtneyjuma
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Upon observing a nebula, you discover that many stars are surrounded by disks of gas and dust. What can you conclude about these stars?



They are very young.



They are very old.



They are red giants.



They are white dwarfs.

Textbook 
ASTRO

ASTRO


Edition: 3rd
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gsh2571gsh2571
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Smart ... Thanks!
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Good timing, thanks!
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