On 2/2/2026 11:50 AM, Jeremiah Jones wrote:Bill Sloman <bill.sloman@ieee.org> wrote:On 1/02/2026 10:57 pm, Jan Panteltje wrote:>I was watching some stuff of magnetic field lines in the universe>
that I recoded last week from zdfinfo.de
https://www.zdf.de/dokus/geheimnisvolles-universum-100
It seems those are playing a much bigger role in the forming of galaxies and stars and the 'big bang' in the latest research.
>
So that makes me wonder if a spacecraft with just a permanent magnet
that you can move to give you a force in the direction you want to go
could be used as a simple fuel-less drive?
Electromagnets should work too of course.
>
Any aliens here that have used it?
Earth has a magnetic field, and nobody uses magnets to drag boats or
aircraft around.
Earth *is* a magnet. It is pushed by the magnetic fields of the sun and
galaxies. That's what makes the earth go round the sun.
Utter nonsense.
That's why they're worried about magnetic pole reversal.
[I hope this is just sarcasm, not due to ignorance of basic physics.]
No. There are other reasons to worry about magnetic pole reversal, for
example increased exposure to the solar wind during the time that it happens.
We'll start orbiting the sun in the opposite direction.
No. Geomagnetic reversals have happened several times already, and there is
no reason for and no evidence of an associated reversal of orbital velocity.
<https://en.wikipedia.org/wiki/Geomagnetic_reversal>
Or maybe it will just make time go backwards. Who knows?
Neither of these assumed effects is going to happen.
If you have gotten the idea from one of the first (the first?) Superman
movie that time would depend on the direction in which Earth is rotating:
That's just fantasy.
Superman might be able to reverse time, but reversing the direction of
rotation is then a consequence of that, and not the cause. Otherwise this
scene is (yet another piece of) evidence of the author's ignorance of basic
physics.
[You can see that Superman is fantasy, and not science-fiction, if you
consider that Lois Lane is not cut in three pieces when he catches her
without adapting to her falling speed first, a scene that was hilariously
discussed by the friends at the beginning of an episode of "The Big Bang
Theory" :-D]
F'up2 sci.physics
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