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kincasdce123 kincasdce123
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3 weeks ago

What is the implication if the distance to the nearest star is 4. 2 light-years?



The star is 4. 2 million AU away.



The light we see left the star 4. 2 years ago.



The star must be very old.



The star must be very young.

Textbook 
ASTRO

ASTRO


Edition: 3rd
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jaimielaviejaimielavie
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3 weeks ago
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this is exactly what I needed
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