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staedtler staedtler
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7 years ago
If we sent a radio message toward the star nearest to the Sun, and intelligent beings from a planet near that star sent back a reply immediately upon receipt of the message, how long after our transmission would we have to wait for a reply?
   A)  8.6 years    B)  1 light-year    C)  1 year    D)  20,000 years
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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discovererdiscoverer
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7 years ago
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staedtler Author
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7 years ago
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