He has been the Commander of the ISS on 4 occasions.
Cheng, Kenneth (27 March 2015). "Breaking Space Records". New York Times. Archived from the original on 2015-04-05. Retrieved 28 June 2015.
He has been the Commander of the ISS on 4 occasions.
Cheng, Kenneth (27 March 2015). "Breaking Space Records". New York Times. Archived from the original on 2015-04-05. Retrieved 28 June 2015.