Duane Graveline

Duane Edgar "Doc" Graveline was an American physician and NASA astronaut. He was one of the six scientists selected in 1965, in NASA's fourth group of astronauts, for the Apollo program. He was best known for being immersed in water for seven days as part of his zero gravity deconditioning research while working as a United States Air Force (USAF) research scientist.

文字来自 Wikipedia，CC BY-SA 4.0

图片: NASA · Public domain