Dafydd Williams

Dafydd Rhys "Dave" Williams OC (born May 16, 1954) is a Canadian physician, public speaker and a retired CSA astronaut. Williams was a mission specialist on two space shuttle missions. His first spaceflight, STS-90 in 1998, was a 16-day mission aboard Space Shuttle Columbia dedicated to neuroscience research. His second flight, STS-118 in August 2007, was flown by Space Shuttle Endeavour to the International Space Station. During that mission he performed three spacewalks, becoming the third Canadian to perform a spacewalk and setting a Canadian record for total number of spacewalks. These spacewalks combined for a total duration of 17 hours and 47 minutes.

Biography from Launch Library 2.

• Space Shuttle Endeavour / OV-105 | STS-118 — Mission Specialist · Success · August 8, 2007
• Space Shuttle Columbia / OV-102 | STS-90 — Mission Specialist · Success · April 17, 1998

• STS-118 EVA 4 — 2007-08-18 · 4h 45m
• STS-118 EVA 2 — 2007-08-13 · 6h 28m
• STS-118 EVA 1 — 2007-08-11 · 6h 17m