Is there a differance between the geomagnetic field of the Earth,and the magnetic field of a magnet? And how far does the Earth's geomagnetic field reach into space?

There isn't much difference, except Earth's is bigger.

A magnetic field is infinite in extent, so it reaches out forever.

I think tycho is right and that magnetic fields created by electromagnetic forces is like all other forces and it has infinite reach. But like gravity, the effects of a magnetic field become smaller and smaller as you get farther away until its pretty much inconsequential.

hmmm,,,then the magnetic field becomes unmeasureable after a certain distance?

I think that at some point if we headed out into space we would be unable to measure earth's magnetic field with current instrumentation.

With more sensitive equipment you'd be able to detect it further away, but I imagine there would come a point where it was indistinguishable from other fields.

Then,,,lemme go out on a limb,,,if the earths geomagnetic field is no different than a magnets magnetic field,,,then it is theoretically possible to generate a magnetic field on a probe to help push itself away from the Earth,,or is this a TOTALLY different type of field?

 

I think i hear that limb breaking,,lol

are you talking about superconductors for levetation or deflection of said probe?

mmmm,yes

Earth's magnetic field is confused, w/ very poor alignement and fluid [no pun intended] in vector and amplitude. Magnetic waves come from aligned electron movement [orbital or atom to atom flow], no matter the source. Once emitted it should be infinite. To the propulsion question, at the north magnetic pole would a magnetic "north down" pole weight be lighter than in the "south down position? How much? Field strength and distance? Tecvia