We don't often face fashion challenges at our cover shoots, but this one was an exception. For starters, we are featuring what might be the most expensive suit on-or off-the planet at more than $12 million. And it weighs more than the person wearing it. But then the suit is designed for the International Space Station, where it weighs nothing. Time has been in the lives and living rooms of America's astronauts since the days of the Mercury program more than half a century ago. Our Year Ahead special issue seemed to be just the opportunity to bring that access and experience to bear again, because of all the challenges that await us in 2015, Scott Kelly faces the most extraordinary one. In an effort to understand the impact of long-term space travel on the human body, Scott will spend a year in orbit while scientists monitor his twin brother Mark, a former astronaut, on Earth. "The Kelly brothers offer NASA the chance to run the perfect controlled experiment-comparing two genetically identical bodies in two very different environments," observes Jeff Kluger, who wrote our story.
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