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Thomas D. Jones, PhD is a former NASA astronaut, scientist, speaker, author, and consultant. He holds a doctorate in planetary sciences, and in more than eleven years with NASA, flew on four space shuttle missions to Earth orbit. On his last flight in 2001, Dr. Jones led three spacewalks to install the centerpiece of the International Space Station, the American Destiny laboratory. He has been privileged to spend fifty-three days working and living in space. [+]