That's the Earth's "rotation axis", and you need not worry, as it is not broken.
The equator.
No
it sucks
Because there is no physical axis. That's just the imaginary line around which the Earth rotates.
There are two principle motions of the Earth. The earth rotates around on its axis. The earth is also known to revolve around the sun.
Precipitatio
The earths rotates on it's axis away from the sun.
The very center. he belived everything revolved around the earth.
Earth revolves around the sun and rotates on its axis.
It Rotates, and is called penumbra
axis - An imaginary line that passes through earths center and its north and south poles.
The Earth rotates on its axis causing either the North or South Hemishere to tilt towards the sun which ever hemishere is tilted toward the sun it is probably spring or summer.