The universe is about 0.1% iron. What about our solar system?
The sun and other planets is about 333,000 times the mass of the earth. In addition there are asteroids and comets and whatever. If the solar system is about the same ratios as the universe, then our solar system contains 333 times as much iron as the weight of the earth. Take out the entire mass of Jupiter and that still leaves 15 times the mass of the earth in iron alone. There is plenty of iron around.
You mentioned an observation made by Hubble. When you spin a disc where does the heavy material end up? If the sun heats up what does the lighter material go?
What about the asteroid belt and the fact that comets are still seen. Does that conflict with your thought expressed here:
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Which is why I find the Grand Bombardment theory so stupid, when the gravitational attraction of the Sun and Jupiter is considered. Hard to believe some so-called scientists would even consider 'swarms' of iron-rich micro-planets attacking only Earth in a short (?) period of time and making it molten, while the swarms apparently ignored the Sun and Jupiter.
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