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Expedition 53 crew members: Joe Acaba of NASA, left, Alexander Misurkin of Roscosmos, center, and Mark Vande Hei of NASA answer questions from the press outside the Soyuz simulator ahead of their Soyuz qualification exams, Thursday, Aug. 31, 2017 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. via NASA http://ift.tt/2wHF3zZ

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The Voyager 1 aboard the Titan III/Centaur lifted off on September 5, 1977, joining its sister spacecraft, the Voyager 2, on a mission to the outer planets. via NASA http://ift.tt/2gJoEad

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MCG+01-38-005 (below) is a special kind of megamaser; the galaxy’s active galactic nucleus pumps out huge amounts of energy, stimulating clouds of surrounding water. via NASA http://ift.tt/2epVgS0

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NASA engineers closed a summer of successful hot fire testing Aug. 30 for flight controllers on RS-25 engines that will help power the new Space Launch System (SLS) rocket being built to carry astronauts to deep-space destinations, including Mars. via NASA http://ift.tt/2xyYAm6

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NASA's Operation IceBridge is flying its summer Arctic land ice campaign in Greenland, continuing its measurements of the Greenland Ice Sheet and its outlet glaciers. This photograph from the mission was taken on Aug. 29, 2017, from 28,000 feet, looking north while surveying Nioghalvfjerdsbrae (79 N) Glacier in northeast Greenland. via NASA http://ift.tt/2x5KGKi

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Gemini V command pilot Gordon Cooper (right) and Charles "Pete" Conrad, pilot, walk across the deck of the aircraft carrier USS Lake Champlain following their spacecraft's recovery from the ocean on Aug. 29, 1965. The eight-day Gemini V endurance mission doubled America's spaceflight record set two months earlier. via NASA http://ift.tt/2x1awPF

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Gemini V command pilot Gordon Cooper (right) and Charles "Pete" Conrad, pilot, walk across the deck of the aircraft carrier USS Lake Champlain following their spacecraft's recovery from the ocean on Aug. 29, 1965. The eight-day Gemini V endurance mission doubled America's spaceflight record set two months earlier. via NASA http://ift.tt/2x1awPF

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I came late and reluctantly to this decision — I have been teaching classes about the internet since 1998, and I’ve generally had a laissez-faire attitude towards technology use in the classroom.

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I wish Scott Barry Kaufman had been my college professor. Scott told me that he gives extra credit for daydreaming in his classes. That would have been an easy A for a space-case like me.

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I wish Scott Barry Kaufman had been my college professor. Scott told me that he gives extra credit for daydreaming in his classes. That would have been an easy A for a space-case like me.

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This is an article from Turning Points, a magazine that explores what critical moments from this year might mean for the year ahead. Turning Point: Though the first fatal crash involving an autonomous car took place in July 2016, self-driving vehicles have been adopted around the world.

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The past five years have witnessed a seemingly unending series of high-profile account take-overs. A growing consensus has emerged among security practitioners: even long, randomly generated passwords aren't sufficient for locking down e-mail and other types of online assets.

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I wanted to speak more about a life trap I fell into and many others do too. The trap is to think that you have a good chance of living into your eighties. When I turned 40, I remember thinking, “well at least I have a whole second half of life to live.

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