But questions remain about how realistic the goal and timeframe are, given recent and steep Nasa budget cuts, and some scientists are concerned that the plans are driven by geopolitical goals.
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"It was very painful, it felt like you've been hit by a bus," she said. "Nothing would prepare you to understand how much pain I was in."
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Fincke has said he is currently "doing very well" and still participating in standard post-flight reconditioning at NASA's Johnson Space Center in Houston. "Spaceflight is an incredible privilege, and sometimes it reminds us just how human we are," he said. "Thank you for all your support."
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