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doit_the_clown doit_the_clown
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7 years ago
The most straightforward way to determine the distance to a nearby star involves the measurement of
A)   its spectrum.
B)   the ratio of apparent and absolute magnitudes.
C)   the Zeeman effect of spectral lines in its spectrum.
D)   its stellar parallax.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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7 years ago
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7 years ago
Good timing, thanks!
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Yesterday
Thanks for your help!!
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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