Last updated on December 20, 2013 at 17:50 EST  Career
Astronauts  Career NASA astronauts are those individuals
selected by NASA to be members of the NASA astronaut corps.
Individuals in this category make up the Space Shuttle crew
positions, such as commander, pilot, or mission specialist, or
International Space Station crew positions, such as commander or
flight engineer.  Career astronauts are divided into four
categories as follows.    1. Active Astronauts are U.S.
astronauts who are currently eligible for flight assignment,
including those who are assigned to crews.   2. Management
astronauts are experienced astronauts who have been promoted to
other positions within NASA, or astronauts on special duty
assignments or sabbaticals that make them unavailable for direct
support to the Astronaut Office.   3. Former astronauts are
those who have left NASA after a career in the Astronaut Corps,
including those who are deceased.   4. International astronauts
are those individuals from international space agencie