A temporary hired extra body who is essentially a useless liability to an otherwise proficient crew. The person will be completely oblivious to any subtly, nuance, or basic professionalism associated with the job. Basically a total mook-sociopath incapable of reading social cues.
Spaceisific means to know alot about space and things that are in space such as knowing about the planets on space and even the one's that are not here anymore like Pluto and alot of other things to.