This is due to the fact that the earth wobbles as it rotates on its axis like a precessing top, requiring 26,000 years to complete one cycle.
(This; is; due to the fact that the earth wobbles) (the earth; wobbles; T:as it rotates on its axis like a precessing top, requiring 26,000 years to complete one cycle) (it; rotates; on its axis like a precessing top) Context(it rotates,List([50, 60))):(it; rotates on its axis like a precessing top requiring; 26,000 years; to complete one cycle)
it rotates,List([50, 60))
This the earth it it
is wobbles rotates rotates on its axis like a precessing top requiring
due to the fact that the earth wobbles
T:as it rotates on its axis like a precessing top, requiring 26,000 years to complete one cycle
on its axis like a precessing top
26,000 years to complete one cycle