Authors:
  • Some animals on Earth regurgitate as opposed to vomit, i.e., stomach contents flow up into the esophagus without any forceful abdominal contractions. What I experienced in zero gravity was similar to this, expulsion without the heaves.

    Zero Gravity Interview (2006), as quoted in Laura S. Woodmansee "Sex in Space" (p. 31), August 1, 2006.