The Mars Reconnaissance Orbiter has been operational for the past 5 years and has transmitted 70,000 images since it was launched. Here are some of the best photos ever recorded.
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This was the year the World Trade Center was completed.
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A few great old photos of people of New York City.
She looks the same every single time.
These landscape photos capture the scenic countryside of each of the 50 states.
Photos That Speak a Thousand Words (49 pics)
These entries into the National Geographic Travel Photo Competition 2013 bring people and places to life. Related post:Some of the Top Entries from the National Geographic Wildlife Photo Contest (35 pics)