CANCEL
Missions
Badges
ISS Visitor
This astronaut visited the International Space Station.
Crossed Kármán Line
This astronaut crossed the Kármán Line (100 km), the internationally accepted boundary of space.
Elite Spaceflyer
This astronaut is in the top 5% for total time in space.
Space Resident
This astronaut has spent over a month in space.
Crewmates
269
James S. Voss
5
MISSIONS
202.2
DAYS IN SPACE
4
SPACEWALKS
0.9
DAYS SPACEWALKING
295
Susan J. Helms
5
MISSIONS
211
DAYS IN SPACE
1
SPACEWALKS
0.4
DAYS SPACEWALKING
315
Yury Usachov
4
MISSIONS
552.9
DAYS IN SPACE
7
SPACEWALKS
1.3
DAYS SPACEWALKING
320
James D. Halsell Jr.
5
MISSIONS
52.4
DAYS IN SPACE
-
SPACEWALKS
-
DAYS SPACEWALKING
338
Mary E. Weber
2
MISSIONS
18.8
DAYS IN SPACE
-
SPACEWALKS
-
DAYS SPACEWALKING
353
Scott J. Horowitz
4
MISSIONS
47.4
DAYS IN SPACE
-
SPACEWALKS
-
DAYS SPACEWALKING
370
Pavel Vinogradov
3
MISSIONS
546.9
DAYS IN SPACE
7
SPACEWALKS
1.6
DAYS SPACEWALKING
452
Marcos C. Pontes
1
MISSIONS
9.9
DAYS IN SPACE
-
SPACEWALKS
-
DAYS SPACEWALKING
515
Maksim V. Surayev
2
MISSIONS
334.5
DAYS IN SPACE
2
SPACEWALKS
0.4
DAYS SPACEWALKING
516
Guy Laliberté
1
MISSIONS
10.9
DAYS IN SPACE
-
SPACEWALKS
-
DAYS SPACEWALKING
528
Oleg Skripochka
3
MISSIONS
536.2
DAYS IN SPACE
3
SPACEWALKS
0.7
DAYS SPACEWALKING
556
Aleksey Ovchinin
3
MISSIONS
374.8
DAYS IN SPACE
1
SPACEWALKS
0.3
DAYS SPACEWALKING
WIKIPEDIA EXCERPT
Jeffrey Nels Williams is a retired United States Army officer and a NASA astronaut. He is a veteran of four space flights and formerly held the American record for most days spent in space, which was surpassed in April 2017 by his colleague Peggy Whitson. He still holds the record of the longest time in space for an American man.