That's non-controversial, regular knowledge right? That the proto iron age happened all over in 1 or 2 centuries in which meteors dropped iron from the sky. It was in regular history books when i was a kid.
They always brush right over why it was raining iron. Isn't that crazy wth is that about?
Its at the BOTTOM of the lightest elements. Each element gives off energy when its created in fusion. Up to (and including) iron they give off more energy than they cost to create. This means that in a stellar explosion iron will be the last in the fusion chain. After 26 they get more and more rare because it costs more energy to make it than it gives off and they will only be created from neutron capture. This means more iron will be produced than all elements heavier than it.
No one said there was only iron in the core. It's just by far the most abundant. It's also in all the other layers of the Earth, as are all the other elements. It isn't a nice perfect little layer cake. It was (probably) made with a lot of impacts over a long period of time. Think of it more like a raisin cake with raisins all over, with a bonus raisin center.
Boiling point is a function of temperature and pressure, not just temperature. The higher the pressure, the higher the boiling point. The pressure is very high at the center of the Earth.
It creates a dynamo effect. A dynamo is the creation of a magnetic field from a rotating induced electric field.
I bet wiki. Trust me that I know the standard story. Half-truth and non-science from years ago. Prolly should chk snoops, or a geo-physical journal.
I love how people dismiss wikipedia, as if its automatically false. I use wikipedia when it tells the same story as every place else but in a simpler manner. In this case I only used one wikipedia reference. Did you check past the first one?
I can go through the math of it if that will help you. I can show you physics books that tell the same thing. I can point you to experiments that show the same thing. What evidence would you like?
I can provide any level of detail to support what I just showed you that you want.
You asked questions, I answered them. After I showed you the answer, you did not say what was wrong with the answer, you only attempted to discredit the source, without addressing the argument. That is not an attempt to get to the truth, but an attempt to resolve cognitive dissonance with a result of confirmation bias.
If you have determined that no matter what evidence I show you, I must be wrong, then there is literally no evidence that will change your mind. Do you know what its called when no evidence will change someone's mind? On this board when we are talking about the vaxxed, we call that insanity.
You do know that is the theory derived from seismic research in the 30's. By 1940 it was concluded the inner core was "solid Fe" at 9,400 degrees. A bit convoluted how that determination was made, particularly in light of the fact there is no such thing as "solid Fe" above 2,880 regardless of pressure. It did fit the "dynamo" story however. It made sense to think of like a motor/generator. You move the magnet over the coil or the coil over the magnet. They had no idea the earth was part of a solar elec circuit, or that Maxwell had shone 30 years prior that all elec fields produce equal magnetic fields at 90 degrees. If you haven't made the connection this is why the poles wander, as they are doing now, and occasionally flip, as they are about to do. This would not ever happen in the "magnetic iron core" model even if the "solid iron core" were replaced with something both magnetic and solid at that temp (???) and the "molten outer iron core" (cooler but liquid...hmmm) were spinning and conductivity not dropping. 90 year old science. Modern geo-physical scientists deal with much better equipment and much more complex internal structures,... "LLSVPs" and they admittedly know less today than back in the day
The triple point of iron is estimated to be 3800C. The temperature of the core is estimated to be at 6000C. How do we explain the discrepancy? Possibly different states of crystallization. Just like how carbon can form different states at extreme pressures, so can other elements. But it can also be a liquid yet stable form. It doesn't have to be "solid" to be iron and in a permanent semi-solid (coherent) ball.
Is that the "truth"? I have no idea, but neither do you (unless you've been the the center of the Earth and just aren't telling me). It makes a lot of sense that the core is iron, regardless of how the magnetic field is produced.
When we look out into the universe we see a whole lot of iron. Experiments show us that iron is at the bottom of the fusion pile, which gives a reasonable explanation as to why we observe so much of it. Considering that the Earth is a (mostly) solid rock, it makes sense that its core would be iron. Most other rocky planets are also thought to be mostly iron (core) for exactly the same reasons; i.e. what we observe.
As for the sun connection, sure, there is likely a EM connection with the Sun. That doesn't mean that the core isn't iron, nor does it mean that the Earth isn't a dynamo. Just because there may be other elements than we are aware of doesn't mean we need to throw the baby out with the bathwater.