Encyclopedia Astronautica
Astronaut Statistics


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Astronaut Statistics - as of 30 July 2010


Total space flight time: 34,710 crew-days (95 crew-years)

Total spacewalk time: 151 crew-days


Total persons that have flown in space:

  • By US Air Force definition (over 50 statute miles altitude - includes X-15, SpaceShipOne flights over that altitude): 496
  • By Fédération Aéronautique Internationale (FAI) definition (over 100 km altitude - of X-15 pilots includes only Joseph Walker, who flew two X-15 flights over 100 km, plus SpaceShipOne pilots Melvill and Binnie): 490
  • Persons who have flown in orbit: 487

Excluded are Space Shuttle Challenger crew members who perished before reaching orbit on their first mission. On two Soyuz missions, launch aborts also occurred. However in both cases the crew members survived the abort and flew in space on later missions.


  • Astronaut with the most space flight time: Krikalyov - 803.4 days - 6 flights
  • Single longest spaceflight: Polyakov aboard Mir LD-4 launched 8 Jan 1994 - 437.7 days
  • Most missions: Seven - Chang-Diaz - 7 flights - 62.8 days and Ross - 7 flights - 58.0 days
  • Speed record: 1969-05-26 - 11,107 m/s at 122 km altitude during re-entry - Apollo 10 - Cernan, Stafford, Young
  • Altitude record: 401,056 km altitude in emergency return trajectory on 1970-04-14 - Apollo 13 - Haise, Lovell, Swigert

Top Ten Astronauts by total space flight time:


Astronauts with six or seven space missions:


Top Ten Single Flight Durations:


Fastest Person Alive - Progressive Rocket Flight / Space Record:

  • BI-1 Flight 7 - Bakhchivandgi - 800 kph - pilot killed
  • Me-163 - various pilots - during test and operational flights of the Me-163 rocket fighter in World War II the aircraft approached the sound barrier (Mach 1 - ca. 1,080 kph / 310 m/s, depending on altitude/temperature).
  • 1947-10-14 - XS-1 Flight 50 - Yeager - Mach 1.0 - 1,100 kph - First supersonic flight
  • 1948-03-26 - XS-1 Flight 76 - Yeager - Mach 1.45 - 1,550 kph - Fastest flight in XS-1
  • 1951-06-11 - D-558-II - Bridgeman - 1,900 kph
  • 1953-12-12 - X-1A Flight 10 - Yeager - Mach 2.44 - 2,600 kph - Fastest flight in X-1A - Yeager regained control after a 15 km dive
  • 1953-12-12 - X-2 Flight 17 - Apt - Mach 3.2 - 3,400 kph - Pilot killed
  • 1961-03-07 - X-15 Flight 34 - White Robert - 4,674 kph - 1,298 m/s - fastest suborbital flight prior to first manned orbit of the earth
  • 1961-04-12 - Vostok 1 - Gagarin - 7,844 m/s - first man in orbit - 169 x 315 km orbit
  • 1962-10-03 - Mercury MA-8 - Schirra - 7,850 m/s - 153 x 285 km orbit
  • 1965-03-18 - Voskhod 2 - Belyayev, Leonov - 7,892 m/s - 167 x 475 km orbit
  • 1966-09-12 - Gemini 11 - Conrad, Gordon - 8,003 m/s - boosted by Agena to 304 x 1,372 km orbit
  • 1968-12-21 - Apollo 8 - Anders, Borman, Lovell - 10,807 m/s during trans-lunar injection
  • 1969-05-26 - Apollo 10 - Cernan, Stafford, Young - 11,107 m/s at 122 km altitude during re-entry

Highest Altitude Achieved - Progressive Rocket / Space Flight Record:


Career Records:
  • Longest wait for a spaceflight after becoming an astronaut: Kadenyuk - 21 years, 3 months; Lind - 19 years, 1 month.
  • Biggest gap between two spaceflights: Glenn - 36 years 8 months
  • Longest continuous flight career (duration between first and last space launches): Ryumin 4 flights over 20 years 8 months; Engle 5 flights over 20 years 2 months; Young 6 flights over 18 years 8 months.
  • Youngest person in space: Gherman Titov, age 25, Vostok 2, 1961.
  • Oldest person in space: John Glenn, age 77, STS-95, 1998.
  • Oldest person to pilot a spacecraft: Mike Melvill, age 63, SpaceFlightOne Flight 13P, 2004-06-21.

Progressive manned single spaceflight duration record:


More... - Chronology...

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