1. A person lost in thought.

2. A day dreamer.

3. An astronaut in training.

The term can be as old as the 1800's. It was in common us in the U.S during the 1930's. The most notable uses was in the Loony Toons show 'Duck Dodgers in the twenty-forth and a half century'. More negative meanings were added to it during the 1970's and 80's.
'There she/ he goes again. Starring off into space. Just like a true space codet.
by SpaceCodet October 16, 2013
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