Update: Apologies for the misleading question. Just realized that the answer I had in mind is completely untrue. I have changed the question accordingly. If you wasted time looking for the non-existent connect, I apologize. If you found a good connect, let me know :)
Answer: The visuals are "The blue marble" and "The pale blue dot". Carl Sagan convinced the Voyager program to take the second picture which shows earth from an astronomical distance. I had some vague idea that Sagan made a comment connecting the two visuals. My bad. Kaushik, Raghu, Krithi, Mekie and Amresh got it. Well done.
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The Pale Blue Dot (pic right) is a photograph of planet Earth (pic left) taken in 1990 by Voyager 1 from a record distance, showing it against the vastness of space. The idea for taking the distant photo and the title came from scientist and astronomer Carl Sagan, who also wrote the 1994 book of the same name
Images from Carl Sagan's "Pale blue dot"
Earth from space
krithi
L: the iconic photo called the 'blue marble'
R: close up of the beams used in the twin towers light memorial?
On the right is the image taken by voyager 1. Although not obvious at first, the earth can be seen a small dot in this image. Carl Sagan referred to it as 'the pale blue dot'. On the left is one the first images of earth (as seen from apollo 17) showing the south pole.
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