Dafydd Williams
A Canadian doctor who traded the hospital for the heavens, becoming a spacewalk veteran and a passionate advocate for science.
Born 1954 (age 72)·Canadian astronaut, physician and public speaker·Birthday: May 16·Baby Boomers
Biography
Dafydd Williams is the embodiment of the citizen-scientist-astronaut, a man whose career seamlessly blends medicine, exploration, and public service. Before looking down on Earth from orbit, he was an emergency physician and director of the emergency department at a major Toronto hospital. Selected by the Canadian Space Agency in 1992, his medical expertise proved invaluable. Williams flew on two Space Shuttle missions, STS-90 and STS-118, logging over 17 hours outside the spacecraft during three spacewalks—a record for a Canadian at the time. His work aboard the Neurolab mission focused on how the brain adapts to weightlessness. Since hanging up his spacesuit, he has led science centers and museums, channeling his experiences into inspiring the next generation to look up and wonder, always grounding the poetry of spaceflight in the practical language of scientific discovery.
Baby Boomers
1946–1964
The largest generation in history at the time. Shaped by postwar prosperity, the Vietnam War, the sexual revolution, and Watergate. They questioned every institution their parents built — then ran them.
Dafydd was born in 1954, placing them squarely in the Baby Boomers. The events that shaped this generation — postwar prosperity, civil rights, Vietnam, and the counterculture — shaped the world they entered and the choices available to them.
#1 When Dafydd Was Born
The biggest hits of 1954
#1 Movie
White Christmas
Best Picture
On the Waterfront
#1 TV Show
I Love Lucy
Dafydd's Life & Times
The world at every milestone
1954Born
Brown v. Board of Education desegregates US schools
Gas: $0.29/galHome: $8,925Min wage: $0.75/hrPresident: Dwight D. Eisenhower"Little Things Mean a Lot" — Kitty KallenBest Picture: On the Waterfront
1959Started school
Fidel Castro takes power in Cuba
Gas: $0.30/galHome: $12,400Min wage: $1.00/hrPresident: Dwight D. Eisenhower"The Battle of New Orleans" — Johnny HortonBest Picture: Ben-Hur
1967Became a teenager
Summer of Love in San Francisco; first Super Bowl
Gas: $0.33/galHome: $14,250Min wage: $1.40/hrPresident: Lyndon B. Johnson"To Sir, with Love" — LuluBest Picture: In the Heat of the Night
1970Could drive
First Earth Day; The Beatles break up
Gas: $0.36/galHome: $17,000Min wage: $1.60/hrPresident: Richard Nixon"Bridge over Troubled Water" — Simon & GarfunkelBest Picture: Patton
1972Could vote
Watergate break-in; last Apollo Moon mission
Gas: $0.36/galHome: $19,550Min wage: $1.60/hrPresident: Richard Nixon"The First Time Ever I Saw Your Face" — Roberta FlackBest Picture: The Godfather
1975Turned 21
Fall of Saigon ends the Vietnam War
Gas: $0.57/galHome: $27,600Min wage: $2.10/hrPresident: Gerald Ford"Love Will Keep Us Together" — Captain & TennilleBest Picture: One Flew Over the Cuckoo's Nest
1984Turned 30
Apple Macintosh introduced
Gas: $1.13/galHome: $59,800Min wage: $3.35/hrPresident: Ronald Reagan"When Doves Cry" — PrinceBest Picture: Amadeus
1994Turned 40
Nelson Mandela elected president of South Africa
Gas: $1.11/galHome: $90,400Min wage: $4.25/hrPresident: Bill Clinton"The Sign" — Ace of BaseBest Picture: Forrest Gump
2004Turned 50
Indian Ocean tsunami kills over 230,000
Gas: $1.88/galHome: $157,300Min wage: $5.15/hrPresident: George W. Bush"Yeah!" — UsherBest Picture: Million Dollar Baby
2014Turned 60
Russia annexes Crimea; Ebola outbreak in West Africa
Gas: $3.37/galHome: $160,700Min wage: $7.25/hrPresident: Barack Obama"Happy" — Pharrell WilliamsBest Picture: Birdman
2024Turned 70
AI reshapes industries; Paris Olympics
Gas: $3.31/galHome: $372,000Min wage: $7.25/hrPresident: Joe Biden"Espresso" — Sabrina CarpenterBest Picture: Anora
2026Age 72 today
Gas: $3.91/galPresident: Donald Trump
Key Achievements
- Completed three spacewalks (EVAs) totaling over 17 hours during the STS-118 mission to the International Space Station.
- Served as a mission specialist on the STS-90 Neurolab flight, dedicated to neuroscience research in microgravity.
- Held the position of President and CEO of the Ontario Science Centre from 2014 to 2023.
- Served as Director of the Space and Life Sciences Directorate at NASA's Johnson Space Center.
Did You Know?
He is a certified diving medical officer and has served as a crew medical officer on an Arctic diving expedition.
Williams carried a copy of the song 'Frozen' by his fellow Canadian, Jane Siberry, on a cassette tape during his first spaceflight.
He performed ultrasound scans on fellow astronauts in space as part of medical experiments.
Before becoming an astronaut, he was a commercial and instrument-rated pilot and a flight medical officer.
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