# Tag Info

Accepted

### Could two celestial bodies with extreme magnetic fields affect each other's motion via magnetism?

The gravitational force declines as $1/r^2$ while magnetic field from a dipole goes as $1/r^3$: hence magnetic forces typically become negligible over longer distance, unless the source is extremely ...
• 14.9k

### Does the coriolis force help shape the magnetic field of the sun?

Yes. For example in "The Sun and its Restless Magnetic Field" (Manfred SchÃ¼ssler) The forces which are most important for the dynamics of a magnetic flux tube are the buoyancy force, the ...
• 125k
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### Is Venus' magnetosphere actually more powerful than the solar wind's magnetic field that induced it or vice versa?

Is the Venus's magnetosphere actually more powerful than the solar wind's magnetic field that induced it or vice versa? I think you are asking whether the magnitude of the magnetic field is larger at ...
• 1,031

### Are there areas within Jupiter's magnetosphere without powerful radiation?

Yes. Callisto orbits outside of Jupiter's radiation belts but inside the magnetosphere. As a result, radiation there is lower than in interplanetary space. It is just over 10 times the Earth surface ...
• 591

### Is the gravitational force of the mass a result of combined magnetic field of every single atom in that mass?

Gravity is something different from magnetism. Magnets have a dipole field, their force decays as $r^{-3}$. Gravity is a monopole field, its force decays as $r^{-2}$. This difference is easily ...
• 19.9k
Accepted

### Is the magnetic permeability (mu_0) necessary in the expression for planetary magnetic field?

It entirely depends what system of units you are working in. $\mu_0 \simeq 4\pi\times 10^{-7}$ in S.I. units. However, in Gaussian units, $\mu_0=1$ and so it isn't included. In Gaussian units, the ...
• 155k

### On the Radiation Field of large Gas Giants

I've been interested in exomoons for a while as well, and having read multiple studies (I admit I only fully read about two), I don't recall seeing any mention of Van-Allen belts being an issue. The ...
• 587