A Pale Blue Dot: The Ultimate Earth "selfie..."
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A Pale Blue Dot was written in 1990 by Carl Sagan in response to a NASA photograph that he requested be taken as Voyager I, in February 1990, was leaving our solar system. Voyager I turned and took the "ultimate Earth selfie" showing Earth as a tiny speck of blue in a vast, scattered light rays.  Stop for a moment before beginning the lesson and go to this link to see the actual photo. Â
1. What are the three sentences Sagan uses to emphasize that the pale blue dot is Earth?
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