This article is from the Space FAQ, by Jon Leech leech@cs.unc.edu and Mark Bradford tla@surly.org with numerous contributions by others.
Astronaut Candidate Program
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The National Aeronautics and Space Administration (NASA) has a need for
Pilot Astronaut Candidates and Mission Specialist Astronaut Candidates
to support the Space Shuttle Program. NASA is now accepting on a
continuous basis and plans to select astronaut candidates as needed.
Persons from both the civilian sector and the military services will be
considered.
All positions are located at the Lyndon B. Johnson Space Center in
Houston, Texas, and will involved a 1-year training and evaluation
program.
Space Shuttle Program Description
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The numerous successful flights of the Space Shuttle have demonstrated
that operation and experimental investigations in space are becoming
routine. The Space Shuttle Orbiter is launched into, and maneuvers in
the Earth orbit performing missions lastling up to 30 days. It then
returns to earth and is ready for another flight with payloads and
flight crew.
The Orbiter performs a variety of orbital missions including deployment
and retrieval of satellites, service of existing satellites, operation
of specialized laboratories (astronomy, earth sciences, materials
processing, manufacturing), and other operations. These missions will
eventually include the development and servicing of a permanent space
station. The Orbiter also provides a staging capability for using higher
orbits than can be achieved by the Orbiter itself. Users of the Space
Shuttle's capabilities are both domestic and foreign and include
government agencies and private industries.
The crew normally consists of five people - the commander, the pilot,
and three mission specialists. On occasion additional crew members are
assigned. The commander, pilot, and mission specialists are NASA
astronauts.
Pilot Astronaut
Pilot astronauts server as both Space Shuttle commanders and pilots.
During flight the commander has onboard responsibility for the vehicle,
crew, mission success and safety in flight. The pilot assists the
commander in controlling and operating the vehicle. In addition, the
pilot may assist in the deployment and retrieval of satellites utilizing
the remote manipulator system, in extra-vehicular activities, and other
payload operations.
Mission Specialist Astronaut
Mission specialist astronauts, working with the commander and pilot,
have overall responsibility for the coordination of Shuttle operations
in the areas of crew activity planning, consumables usage, and
experiment and payload operations. Mission specialists are required to
have a detailed knowledge of Shuttle systems, as well as detailed
knowledge of the operational characteristics, mission requirements and
objectives, and supporting systems and equipment for each of the
experiments to be conducted on their assigned missions. Mission
specialists will perform extra-vehicular activities, payload handling
using the remote manipulator system, and perform or assist in specific
experimental operations.
 
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