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Science & Technology

Earth's core is as hot as the Sun's surface

By T.K. Randall
April 27, 2013 · Comment icon 32 comments

Image Credit: CC 3.0 Soylent Green
New studies in to the temperature at the Earth's core have revealed it to be much hotter than thought.
To find out how hot the Earth's core is, scientists conducted experiments in which they used x-rays to examine small samples of iron exposed to extremely high pressures so that they could observe how the iron crystals formed and melted. To achieve these pressures they used a device called a "diamond anvil cell" which holds the sample between two synthetic diamonds.

The results indicated that the temperature at the Earth's core is likely to be around 6,000 degrees Celsius, more than 1,000 degrees higher than previous calculations. At this temperature the core is not only hotter but represents a figure comparable to that of the surface of the Sun.
New measurements suggest the Earth's inner core is far hotter than prior experiments suggested, putting it at 6,000C - as hot as the Sun's surface. The solid iron core is actually crystalline, surrounded by liquid.


Source: BBC News | Comments (32)

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Recent comments on this story
Comment icon #23 Posted by regeneratia 12 years ago
Agreed. When a new theory is presented the mainstream is quick to debunk it but if the theory has been proven, then mainstream jumps on the bandwagon. Well, I just heard from a person today that the core is heating up, not that the temp was miscalculated. I don't always agree with the source on this theory, so I sit on fence on this issue. But mainstream science is dogmatic and incurious these days. I don't get where anything about all this proved standard science wrong. What "standard science" are you referring to? All it represents is an advance in our understanding. This is what science is.... [More]
Comment icon #24 Posted by Frank Merton 12 years ago
You have a strange notion of what science does; numbers get changed all the time. Of course I understand that you have an agenda and won't let any amount of common sense get in your way.
Comment icon #25 Posted by The New Richard Nixon 12 years ago
I think it is interesting that this has PROVED standard science wrong. I think people don't realize how dogmatic mainstream science is. Everyday someone learns something new or finds something new, that's science
Comment icon #26 Posted by Emma_Acid 12 years ago
I think it is interesting that this has PROVED standard science wrong. I think people don't realize how dogmatic mainstream science is. Agreed. When a new theory is presented the mainstream is quick to debunk it but if the theory has been proven, then mainstream jumps on the bandwagon. And in a couple of sentences, all that has been shown is just how much neither of you actually understand how science works. Perhaps do a bit of reading before spouting off utter nonsense?
Comment icon #27 Posted by Seeker79 12 years ago
So, the inner-earth theory isn't true???? There only needs to be a large enough cavern. Potentially using this very energy.
Comment icon #28 Posted by Hawkin 12 years ago
And in a couple of sentences, all that has been shown is just how much neither of you actually understand how science works. Perhaps do a bit of reading before spouting off utter nonsense? When a new theory is presented science can at least give it consideration and be more open rather then quick to debunk. Robert H, Goddard was ridiculed for his rocket experiments by his collegues of his day but a german named Wernher von Braun admired Goddard's work and perfected his technology and created the V2 rocket which was used durring WWII. It eventually led up to the Saturn 5 rockets that sent man t... [More]
Comment icon #29 Posted by Emma_Acid 12 years ago
When a new theory is presented science can at least give it consideration and be more open rather then quick to debunk. Firstly, a theory is an established scientific model. What you're referring to is a hypothesis. Science doesn't "debunk" new ideas. It rejects them until there is enough evidence to form a solid theory. This has to be the way - if any zany new idea was given the same consideration as an established theory, then all progress would grind to a halt. A hypothesis has to do its time. It has to be tested, pulled apart, and trialed to within an inch of its life. It has to be support... [More]
Comment icon #30 Posted by Hawkin 12 years ago
Firstly, a theory is an established scientific model. What you're referring to is a hypothesis. Science doesn't "debunk" new ideas. It rejects them until there is enough evidence to form a solid theory. This has to be the way - if any zany new idea was given the same consideration as an established theory, then all progress would grind to a halt. A hypothesis has to do its time. It has to be tested, pulled apart, and trialed to within an inch of its life. It has to be supported by multiple bodies of evidence; it has to be falsifiable (ie there has to be a way of proving it wrong); and it has t... [More]
Comment icon #31 Posted by Emma_Acid 12 years ago
I still think science needs to change their mindset and give a new theory the benefit of the doubt rather then totally reject it until one or a few open minded scientist prove it's worth. Did you even read what I just said.
Comment icon #32 Posted by 12 years ago
Science places the burden of proof on proposers of original ideas - it doesn't reject ideas out of hand. People get used to the lazy mindset common in everyday society that expressing an idea offers it some validity. It isn't true in everyday society and its doubly untrue in the field of science. Br Cornelius
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