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doit_the_clown doit_the_clown
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7 years ago
The Sun has an absolute magnitude of +4.8.  How far away would we have to go in order for the Sun to be just barely visible to the naked eye (6th magnitude)?
   A)  1.2 pc    B)  6 pc    C)  17.4 pc    D)  22.4 pc
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
Brilliant
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2 hours ago
Thank you, thank you, thank you!
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