source; page 18 of a three page article in the October 15,2003, issue of space science magazine. the title of the article is (Manned Mars Flight)

source; page 18 of a three page article in the October 15,2003, issue of space science magazine. the title of the article is (Manned Mars Flight) impossible dream? the author is patrick clinton,a NASA physician.

a second major problem is maintaining  astronauts mental health. being confined for long periods of time in dark and hostile space undoubtedly produces anxiety loneliness and boredom are other psychological concerns.