: In an earlier post the source of a planets magnetosphere being a spinning
: core was mentioned. Does this mean if a planetoid (one that, perhaps has
: three diagonally aligned sub sphere's in, causing it to appear slightly
: bulbous) had no spinning core, there would be no magnetosphere?
: One of the key things about this system being protected from prying eyes
: until WMaiD is a combination of perpetual (Jjaro engineered, heh)Coronal
: Mass ejections (CME's), and strong solar winds making the area hazardous
: for space travel.
: I suppose I could invent some magic artificial magnetosphere generator (Jjaro
: made, of course...) but that seems... cheep.
The magnetosphere is just the very large magnetic field around the Earth. Magnetic fields are generated by any moving charge; a spinning hunk of charges produces one shaped like our magnetosphere, where any charged thing hitting it from the outside gets pulled down to the north or south poles and deflected away from elsewhere. If your planetoid didn't have a normal mantle and liquid iron core like Earth, you could just have a big, charged hunk of anything chargable in the middle, and spin it really fast, to accomplish the same effect. No fancy tech required, just a really big low-tech solution. (Alternately, you could have a smaller core with a higher charge... I think spinning faster might also help but I'm unsure about that).
