00:00On this day in space. In 1963, US Air Force Captain Joe Walker flew an X-15
00:07spaceplane higher than any pilot had ever flown before. Walker reached an
00:11altitude of over 67 miles. That's five miles above the edge of space. Walker
00:16experienced about five minutes of weightlessness over the course of the
00:1811-minute flight. This was the second and final suborbital spaceflight of the
00:22X-15 program. Walker piloted both flights and became the first person to go to
00:26space twice. For both flights he flew on the space plane X-15 number 3, which also
00:31became the first reused spacecraft to return to space. And that's what happened
00:35on this day in space.
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