<p>During an internship I lived with a person who worked at NASA for 30 years and has a certificate of meeting the requirements of being an astronaut (although the person did not choose to become one.)</p>
<p>The person said that the most common astronauts will have an advanced degree in the physical sciences and several years of military training. It is true that you won’t NEED the military; but you will be in a huge disadvantage. Also, auronatics is not in and of itself that special… there are some astronatus with four or more degrees, or at least a Ph.D. in chemistry, physics, or mathematics and/or medical degrees.</p>