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axis
subjectfact 
axisis a kind of line2001-09-27 09:32:36.0
has definition Theoretical straight line through a celestial body, around which it rotates.has source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:32:36.0
linehas dimensions 12001-09-27 09:32:36.0