From Brandon Spektor at LiveScience:
Earth’s Inner Core Shouldn’t Technically Exist
In the paper, the researchers argued that the standard model of how the Earth’s core formed is missing a crucial detail about how metals crystallize: a mandatory, massive drop in temperature that would be extremely difficult to achieve at core pressures.
Weirder still, the researchers said, once you account for this missing detail, the science seems to suggest that Earth’s inner core shouldn’t exist at all. More.
We don’t know as much as many people think about the Moon either.
See also: Textbook theory of moon’s origin is challenged
Space.com: Scientists finally know how old Moon is What’s surprising, really, is how little we know about the moon in general.
Another moon origin theory: Epic crash
How the Moon Formed: 5 Wild Lunar Theories (Mike Wall at Space.com, 2014)
Our moon formed in collision with embryo planet?
and
Origin of the moon still shrouded in mystery
Hmmm. Let’s say the earth started out as a large globe of water. Molten metallic material would rapidly cool and crystallize, given the relative incompressibility of water. Capturing enough solid material could build up the core, mantle, and crust.
I have no idea whether this would work, but it might be interesting to consider given this:
http://science.sciencemag.org/...../6204/1590
-Q
Earth’s Inner Core Shouldn’t Technically Exist.
Therefore it’s … a Methodological Materialistic Miracle.
The more they deny this planet is something very special the more this planet demonstrates just how very special it is.
From “The Privileged Planet” we learn:
Happenstance? Really?
See SPIRAL’s ‘Draw Play’ and ‘SNAP’ hypotheses on Earth, Solar, Lunar and our initial single continent formation.