Re: Magnetic field

rAgAv wrote:
According to a documentary that I watched, when earth was still in its
molten state, the heavy iron present in the spinning planet moved into
the center because of its heaviness and all the lighter substances
moved to the crust thus giving rise to the spinning iron core of the
earth. This spinning iron core gives rise to the magnetosphere.

So, just because Mars was a little bit smaller and was farther from
the sun, it cooled away faster thus leaving the process of formation
of the core at an immature status?

hmm...does Mars even have Iron in its composition? Anyway, where did
the iron in Earth come from?


Earth:
A likely scenario is that the two proto earths collided, the outer layers of each vaporized,
went into orbit about the real earth, and later condensed into the moon.
The heavy metals, being heavy, sank and formed the earth's core.

Mars:
Mars is red because of rust.
Yes, Mars cooled faster because it is smaller. Compare surface areas.
Also, when solar systems are formed, the lighter stuff gets pushed farther out
due to solar wind. The heavy stuff stays closer to the star.
That is why gas giants tend to be far from the sun and rocky planets close to the star.

See if there is a library nearby or a school with a library nearby.
You may want to try to find a few modern books about solar system formation.
It is an interesting subject.
.

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