Originally posted by usaforever
I wouldn't be surprised if "the wobble" thing might be true.
It is true. Its an astronomical feature of the earth.
There's no way in the world to stop the tilt.
I bet superman could do it.
Every 2.5 million years or whatever the tilt, a shift and some species die. Just nature I guess.
its more of a slow wobble. Think of a toy spinning top as the earth. It spins around its center, which is the earth's rotation. It also wobbles
around, the top of it leans in one direction, then slowly leans in the other, back and forth, etc etc. That 'wobble' is the tilt of the earth's
Then, if you think of the movement of the top itself, say across your floor or table, that movement is like the earth's orbit. The earth revolves
around the sun, in a path that is almost like a circle. This path changes over time, some times it is more perfectly ciruclar, other times it is more
'squished' or elliptical.
All of these changes are caused in large part by the gravitational forces of the other planets and astronomical bodies upon the the earth as they are
swirl around the solar system. The tilt and ellipticity of the earth's orbit both change according to a repeating pattern, hence the 'every 2.5
million years, this happens' statements.
These factors have been known since extremely ancient times, they are what causes the 'precession' of the constellations and equinoxes, etc.
Here is a good explanation of these processes:
Some illustrations from that page that sum it up in basic form:
Isn't the other name for this "POLAR SHIFT" or something.
When people on this board say polar shift, they are usually thinking of this old idea that the crust of the earth dettaches from the mantle, and then
spins around, so that the land at the current north pole slips to the south pole, and vice versa.
An actual polar shift is where the magnetic field of the earth switches, without any shifts in land mass.
The wobble, precession, has nothing to do with this.
Even mars seems to suffer from polar shift
Magnetic polar shift is harmless. Its happened numerous times throught the history of the planet and has even occured while humans were around.