Here ’s a arresting picture of humans stamping our step onto the landscape . Taken by a member of the Expedition 35 mission to the ISS in 2013 , this photo of the Phoenix , Arizona area is like a fractal — the closer you attend , the more squares of light source you see .
Image citation : NASA
There ’s a ton of great information in this photo : Phoenix itself is at the right , where the most clustering occurs , and the urban conurbation spreads from there to Glendale in the center and the less - light up Peoria at the left field . There ’s also a bright - line of merchandise cutting through the north - Confederate States of America / east - west grid programme . It ’s Grand Avenue , which run northwest - southeast , turning some of these square into triangles .
NASASpace
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