Lindgren is also a science fiction fan , and in 2015 was a Special Guest at the 73rd World Science Fiction Convention while aboard the ISS . He participated in the Hugo Award ceremony as a guest presenter via videoconferencing , announcing Cixin Liu 's win of the 2015 Hugo Award for Best Novel . He was also a special guest at Worldcon in Helsinki 2017
Worldcon
75th World Science Fiction Convention
Kjell N. Lindgren