Science and Technology : The true age of Earth's core has been discovered – and it's younger than previously thought

Clyde C Coger Jr

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The true age of Earth's core has been discovered – and it's younger than previously thought


Researchers measured the conductivity of iron – the material that forms Earth’s core – in core-like conditions, with a pressure greater than one million atmospheres and temperatures as high as the surface of the sun.

Yahoo News UK


The finding could help us understand the 'Geodynamo' which keeps compasses pointing north. (NASA)


The finding could help us understand the 'Geodynamo' which keeps compasses pointing north. (NASA)


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Fine1952

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How Old Is Earth?
By Nola Taylor Redd February 07, 2019

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Clyde C Coger Jr

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A 16-Million-Year-Old Tree Tells a Deep Story of the Passage of Time

The sequoia tree slab is an invitation to begin thinking about a vast timescale that includes everything from fossils of armored amoebas to the great Tyrannosaurus rex



The shining slab, preserved and polished, is the keystone to consideration of time and our place in it in the “Hall of Fossils—Deep Time” exhibition at the Smithsonian’s National Museum of Natural History. The fossil greets visitors at one of the show’s entrances and just like the physical tree, what the sequoia represents has layers.

:picture:

GettyImages-584372283.jpg

How many answers are hidden inside the giants? Photo by Kelly Cheng Travel Photography / Getty Images.



Smithsonian Magazine
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