The core of the core is the core.

[Brad Johnson]

Earths core holds many secrets. Neat new science findings about core structure.

http://www.foxnews.com/science/2015/02/11/earth-core-has-core-its-own/

Brad

[MechAg94]

I thought the Earth was hollow?   

[MechAg94]

I think this is another one of those topics where if you ask some people, they would say we already know what is in the core, etc, etc.  To me it is always fun to see conventional wisdom upset a little bit especially with things like this where we have no first hand knowledge.  

Either way, just think, and iron ball the size of the moon.  Just think of the mining potential.  

The methods used for this stuff is pretty cool also.

[brimic]

What's underneath always fascinates me, and I think most people lack any kind of perspective on it.
We live on a paper thin crust floating on thousands of miles of superheated mantle/molten mantle/core some of it ranging into the 10s of thousands of degrees, yet some people worry about the level of CO2 rising 0.1% within the confines of a few miles of atmosphere. People give way too much significance to the actions of the human race, when nothing more than a small burp from below can turn the surface into a charred ball of slag.

[MechAg94]

What's underneath always fascinates me, and I think most people lack any kind of perspective on it.
We live on a paper thin crust floating on thousands of miles of superheated mantle/molten mantle/core some of it ranging into the 10s of thousands of degrees, yet some people worry about the level of CO2 rising 0.1% within the confines of a few miles of atmosphere. People give way too much significance to the actions of the human race, when nothing more than a small burp from below can turn the surface into a charred ball of slag.

I remember reading a short story years ago which covered two sets of "people".  One was drilling from above and one drilling up from below.  It was all confusing until the end.  The two holes met.  The end was some guys who lived in really high press/temp below walking on the surface in pressure suits lamenting the death of all the people on the surface before they could plug the hole. 

[BlueStarLizzard]

What's underneath always fascinates me, and I think most people lack any kind of perspective on it.
We live on a paper thin crust floating on thousands of miles of superheated mantle/molten mantle/core some of it ranging into the 10s of thousands of degrees, yet some people worry about the level of CO2 rising 0.1% within the confines of a few miles of atmosphere. People give way too much significance to the actions of the human race, when nothing more than a small burp from below can turn the surface into a charred ball of slag.

you're just a ray of sunshine, aren't you?

[MechAg94]

The "end is near" tv shows talking about all the ways the earth or humans could be destroyed are always neat to watch.  And we can do nothing about most of them.

[230RN]

Maybe right now, somewhere on Earth, there's a Jor-El, readying a little spaceship for his kid.

Terry

[Hawkmoon]

I thought the Earth was hollow?   

Unpossible. When I was a kid my father saw me digging a hole in the yard and he told me if I dug deep enough I'd come out in China.

Of course, I we lived in Connecticut at the time, and the opposite side from Connecticut is in the Pacific Ocean off the west coast of Australia. It's probably I good thing I got tired of digging or I might have flooded the town.

[230RN]

Same thing here, except apparently that's the Indian Ocean or the Southern Ocean... hard to tell which.  I google-mapped -40.00, +105.00, the opposite of Denver's coordinates.  Maybe I didn't do that right, though.

Nothing to see except maybe a couple of sunken satellites which fell there.

Going directly through, parallel to the Equator instead of through the Earth's center, does indeed end up in Inner Mongolia, China, at +40.00, +105.00.

Nothing to see there, either, except a little hogback and a couple of bushes.

Amusing.  But off topic.

Terry

[Devonai]

Unpossible. When I was a kid my father saw me digging a hole in the yard and he told me if I dug deep enough I'd come out in China.

Of course, I we lived in Connecticut at the time, and the opposite side from Connecticut is in the Pacific Ocean off the west coast of Australia. It's probably I good thing I got tired of digging or I might have flooded the town.

The five dollar word for that is "antipodes."

[birdman]

I remember reading a short story years ago which covered two sets of "people".  One was drilling from above and one drilling up from below.  It was all confusing until the end.  The two holes met.  The end was some guys who lived in really high press/temp below walking on the surface in pressure suits lamenting the death of all the people on the surface before they could plug the hole. 

Title?

[RoadKingLarry]

What's underneath always fascinates me, and I think most people lack any kind of perspective on it.
We live on a paper thin crust floating on thousands of miles of superheated mantle/molten mantle/core some of it ranging into the 10s of thousands of degrees, yet some people worry about the level of CO2 rising 0.1% within the confines of a few miles of atmosphere. People give way too much significance to the actions of the human race, when nothing more than a small burp from below can turn the surface into a charred ball of slag.

And that's just from "home". We've had several pretty good sized hunks of rock fly by inside the orbit of the moon in the last couple of years (that we know about). Any one of which if the trajectory had been different by only a degree from a few million miles farther out could have managed to deposit another iridium layer.

[BlueStarLizzard]

Unpossible. When I was a kid my father saw me digging a hole in the yard and he told me if I dug deep enough I'd come out in China.

Of course, I we lived in Connecticut at the time, and the opposite side from Connecticut is in the Pacific Ocean off the west coast of Australia. It's probably I good thing I got tired of digging or I might have flooded the town.

... tried the same thing in New Britain. I really just wanted to visit Japan.

[Doggy Daddy]

Maybe right now, somewhere on Earth, there's a Jor-El, readying a little spaceship for his kid.

Terry

Or maybe a Ber-Te, readying an autoclave that has never before or will ever again be seen by man.

[birdman]

Or maybe a Ber-Te, readying an autoclave that has never before or will ever again be seen by man.

My people have decided earth isn't worth the 'clave....its now the most popular sci-fi reality TV show we have, you earthlings do some crazy stuff! 

Though, there are rumors of a future cancellation...too bad, I really want to see how that AI/computing story arc works out.

[Ben]

The cool thing about the Earth's core is that all the chicks are hot.

[230RN]

I looked at the orbit of that first asteroid that made the news recently, and looking at the trajectory from the "top" (the celestial pole) the orbit did look like it was inside the moon's orbit.

But looking at it from the plane of the ecliptic, you could see that the asteroid was way off.  Still scary, and indeed a minor collision "out there" might shift the orbit of another one (or even this one, next time around) enough to be a danger to Earth.

I was reading "Newton's Clock" recently regarding the stability of all those myriad orbits and the methods used to calculate them, and that can be scary, too.

Terry

REF:
http://www.amazon.com/Newtons-Clock-Chaos-Solar-System/dp/0716727242