NEW DELHI, Mar 19: For NASA astronaut Sunita Williams, an eight-day mission to the International Space Station turned out to be a challenge of a lifetime as problems cropped up on their Boeing space flight that stretched her stay in orbit to over nine months.
Williams also created history by setting a record of most time spent spacewalking by a woman.
She became the only second woman to lead the International Space Station during her second spaceflight in 2012. She oversaw station operations, completed a triathlon in orbit, and 
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