The most important steps that I followed were studying math and science in school. I was always interested in physics and astronomy and chemistry and I continued to study those subjects through high school and college on into graduate school. That's what prepared me for being an astronaut; it actually gave me the qualifications to be selected to be an astronaut.
I didn't really decide that I wanted to be an astronaut for sure until the end of college.
So I decided on science when I was in college.
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