#41 Ireland as seen from space—truly mesmerizing:

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#42 The exact geographic center of the United States is in South Dakota:

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#43 Russia and Alaska—closer than you might think:

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#44 The long and treacherous line to the summit of Mount Everest:

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#45 North Sentinel Island, home to one of the world’s last uncontacted peoples, seen from above:

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#46 Ever wondered what the inside of a water tower looks like? Here it is:

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#47 The Panama Canal mid-construction—an engineering marvel in progress:

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#48 A modern-day lighthouse bulb—brighter than you’d expect:

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#49 A spectacular view of the Himalayas from the International Space Station:

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