The space shuttle and International Space Station were low Earth orbit projects, and many longed for the days of more distant destinations.
They pointed out that after traversing a quarter million miles to the moon and back eight times from 1968-1972, in all the years afterward, humans travelled no further than 386 miles from their home planet -- during the Hubble Space Telescope servicing mission of STS-82 in 1997.
They longed to return to the moon and go onto Mars.
Image: Ed White was the first American to conduct a spacewalk on June 3, 1965. He was, however, killed in the Apollo 1 fire at the Kennedy Space Center, Florida.
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