Key Facts at a Glance
Sunita Williams is a retired NASA astronaut of Indian origin known for long-duration ISS missions and extensive spacewalking. This evergreen overview explains her age during spaceflight, total time in space, and major milestones, focusing on verified data rather than momentary news. Below you will find a concise mission table, definitions of relevant terms, and answers to common questions that remain accurate over time.
- Born: September 19, 1965
- Nationality: United States
- Spaceflights: STS-116 (2006–2007) and ISS Expeditions 14/15 (2006–2007)
- Total time in space: 322 days, 20 hours, 47 minutes (NASA verified)
- Notable records: Single longest spaceflight by a woman (until recently), most spacewalbs by a woman (seven)
What We Mean by Age in Space
When people ask about Sunita Williams age in space, they usually mean how old she was at launch, during the mission, and at landing. In human spaceflight, age is tracked precisely because it relates to physiological effects of microgravity, mission eligibility, and career planning. For context, she was 41 years old at the start of her long ISS expedition in December 2006. Space agencies also consider biological aging, cumulative radiation dose, and elapsed mission time when evaluating astronaut health over the years.
Sunita Williams Birth Date and Baseline Age
Sunita Williams was born on September 19, 1965. Using this fixed reference point, her age at any given date can be computed directly. Publicly available biographies, NASA astronaut biographies, and official mission manifests use this birth date as the authoritative source. This clarity matters when comparing records across different languages and regions, especially because some summaries may approximate age rather than state it precisely.
Her Major Spaceflights and Durations
Williams flew two significant NASA programs: the Space Shuttle and the International Space Station. Her shuttle mission delivered equipment and crew to the ISS, while her ISS expedition focused on scientific research, station maintenance, and public outreach. The table below summarizes key verified metrics that are unlikely to change and remain useful as reference points.
Verified Mission Timeline
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Birth date | September 19, 1965 | NASA biography |
| First spaceflight (STS-116) | December 9, 2006 to December 22, 2006 | NASA mission summary |
| Second mission (Expedition 14/15) | December 25, 2006 to June 22, 2007 | NASA ISS expedition report |
| Total time in space | 322 days, 20 hours, 47 minutes | NASA official data |
| Spacewalks (EVAs) | 7 (all during ISS expedition) | NASA EVA summary |
| Age at launch of longest mission | 41 years old (December 2006) | Derived from birth date + launch date |
Age at Launch and During Flight
For her Space Shuttle flight STS-116 in December 2006, Williams was 41 years old at liftoff and landed at about 41 years and 13 days. For the ISS expedition that began in December 2006 and ended in June 2007, she aged from 41 to 41 years and about six months over the course of the mission. These values are straightforward calculations from her fixed birth date and the official mission timelines published by NASA.
Notable Records and Comparisons
Sunita Williams held the record for the longest single spaceflight by a woman for a period and remains the woman with the most spacewalks. The table below places her key accomplishments in a concise comparison that highlights what made her missions stand out and why they are frequently referenced in discussions about human spaceflight endurance.
Quick Comparison of Key Achievements
- Total time in space: 322 days, 20 hours, 47 minutes — places her among the top U.S. astronauts for cumulative duration.
- Longest continuous ISS stay at the time: approximately 195 days during Expedition 14/15.
- Most spacewalbs by a woman: 7 EVAs, totaling about 50 hours of external activity.
- Age context: began her long ISS mission at 41, which is typical for ISS expedition commanders who balance experience with health screening.
Common Questions and Misconceptions
Because age-related milestones in space draw public interest, a few recurring questions are worth addressing with clarity and verified data. Misunderstandings often arise from mixing different mission summaries or from sources that use rounded numbers rather than exact dates.
Was Sunita Williams the oldest person in space?
No. While she was in her early 40s during her ISS mission, many cosmonauts and astronauts have flown in space at older ages, particularly on later-career flights. NASA and Roscosmos records show younger and older crew members across different programs.
How is time in space calculated for astronauts?
Space agencies record elapsed time from launch to landing, including any prelaunch processing in the standard measure. For ISS expeditions, time is measured continuously across months. Small variations can appear depending on whether you count only docked time or include transit phases, so authoritative sources are essential.
Did her age affect her mission planning or performance?
At 41, Williams met all medical and training standards for long-duration flight. Space agencies conduct rigorous health screening, and her mission planning accounted for typical physiological factors associated with extended microgravity exposure. No publicly available evidence suggests age limited her performance.
Why These Facts Matter for Long-Term Understanding
Spaceflight records age in precise terms because human biology in microgravity is studied over years, not headlines. Accurate reporting about Sunita Williams age and mission timelines supports students, educators, and journalists who rely on dependable references. This evergreen summary focuses on stable facts rather than temporary news cycles, so the information remains useful as new astronauts build on the knowledge she helped create.
Frequently Asked Questions
- When was Sunita Williams born? She was born on September 19, 1965.
- How many days did Sunita Williams spend in space? She accumulated 322 days, 20 hours, and 47 minutes across her missions.
- How old was she when she flew her longest mission? She was 41 years old at the launch of her ISS expedition in December 2006.
- Does NASA still use her records? Yes, her mission durations and spacewalk counts remain part of NASA’s official historical database.
Takeaway
Sunita Williams age during her time in space is straightforward to state when using exact dates and verified sources. She was 41 at the start of her most notable ISS expedition, spent over 322 days in orbit, and set records that remain relevant. By focusing on fixed biographical data and mission timelines, this explanation stays clear, factual, and useful for years to come.