NASA leaders said the shakeup is meant to address a larger underlying problem: the U.S. agency is flying its most powerful rocket too infrequently and repeating some of the same technical issues from one mission to the next.
Nasa has also asked rival company Blue Origin - which is owned by Jeff Bezos - to come up with an accelerated plan for a lunar lander.
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Now that she has recovered, they plan to restart their two-year challenge from the start in Studland near Bournemouth on 4 February.
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如今38歲的這位前海事工程師迄今從事過的最偏遠、最具挑戰性的工作，是現時南極「哈利六號」研究站的站長。