David Alexander Wolf (born August 23, 1956) is an
American astronaut,
medical doctor,
electrical engineer. Wolf has been to space four times. Three of his spaceflights were short-duration
Space Shuttle missions, the first of which was
STS-58 in 1993, and his most recent spaceflight was
STS-127 in 2009. Wolf also took part in a long-duration mission aboard the
Russian space station Mir which lasted 128 days, and occurred during
Mir EO-24. He was brought to
Mir aboard
STS-86 in September 1997, and landed aboard
STS-89 in January 1998. In total Wolf has logged more than 4,040 hours in space. He is also a veteran of 7 spacewalks totaling 41hrs 17min in both Russian and American spacesuits.