How many days did Scott Kelly's longest mission last?
352 days
366 days
236 days
340 days
Answer
Scott Kelly's longest mission lasted 340 days. This mission, which began in March 2015 and ended in March 2016, was part of a joint effort between NASA and the Russian Space Agency to study the effects of long-duration spaceflight on the human body.
Into the Unknown: Exploring the Extraordinary Journey of Scott Kelly
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