Our sense of time can be influenced by things like drinking coffee, or being on an adrenaline rush from an amusement park ride like this one at Dreamworld in Australia. Bradley Kanaris/Getty Images hide caption

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The Wide Field and Planetary Camera 2, now on display at the Smithsonian's National Air and Space Museum, returned to Earth in May 2009 after more than 15 years in orbit. Eric Long/NASM hide caption

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The presence of water on the moon could enable astronauts to make their own breathing oxygen and to use the moon as sort of a space-based filling station. NASA/AP hide caption

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A new study suggests that a high-fat and high-sugar diet can dramatically affect the microbes living in your gut. istockphoto.com hide caption

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A new study suggests that crying infants may be imitating the patterns of the language they heard while in the womb. iStockphoto.com hide caption

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Artist concept of the Ares I-X rocket. Courtesy of NASA hide caption

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