To better understand the human health risks of future missions to Mars, NASA and its international space station partners are considering flying as many as half a dozen additional one-year missions to the station, a NASA official said April 23. Speaking at the Humans to Mars Summit in Washington, Bill Paloski, manager of NASA's Human Research Program, said discussions are ongoing to fly up to six one-year crew increments after the first one-year increment, featuring NASA astronaut Scott Kelly and Roscosmos cosmonaut Mikhail Korniyenko and scheduled to start next March. If approved, the first of the additional one-year missions would likely start a year after the end of the first.
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