This answer was written in September 1998 and represents the state of our knowledge at that time. This page is NOT updated. If you want the latest information, go to the main StarChild homepage and search the main site.
http://www.jsc.nasa.gov/Bios/more.html - You will find a great deal of information by checking out the links under "Information About Becoming an Astronaut".
We wish you luck in your quest!
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StarChild Project Leader: Dr. Laura A. Whitlock
Responsible NASA Official: Phil Newman