Profile image
By Alton Parrish (Reporter)
Contributor profile | More stories
Story Views

Now:
Last Hour:
Last 24 Hours:
Total:

How The Earth’s Core Formed 10 Billion Years Ago

Monday, July 9, 2018 20:57
% of readers think this story is Fact. Add your two cents.
Scientists have discovered fresh insights into the metallic core at the centre of our planet.

The findings could aid understanding of how the Earth was formed from elements in space, some 10 billion years ago.

They could also shed light on the fundamental physical nature of nitrogen, one of the most abundant elements in the atmosphere.

An international team of researchers carried out sophisticated experiments to replicate conditions at the Earth’s core.

A diagram showing layers within the Earth’s mantle and core
New SVG image
Credit: Mats Halldin / Wikimedia Commons

Using high energy laser beams and optical sensors, they were able to observe how samples of nitrogen behaved at more than 1 million times normal atmospheric pressure and temperatures above 3,000C.

Their observations confirmed that, under such conditions, nitrogen exists as a liquid metal.

The findings give scientists valuable insight into how nitrogen behaves at extreme conditions, which could aid understanding of how the planets were formed.

It may help to explain why Earth is the only planet known to have an abundance of nitrogen in its atmosphere – where it exists as a gas. Nitrogen in the air could emerge from deeper within the planet, where, for example, it could mix with other liquid metal.

The findings could also shed light on how the planet’s atmosphere evolved and how it may develop in future.

Their study, carried out by the University of Edinburgh with researchers in China and the US, was published in Nature Communications. It was supported by the Engineering and Physical Science Research Council and the British Council.

Dr Stewart McWilliams, of the University of Edinburgh’s School of Physics and Astronomy, who took part in the study, said: “Earth’s atmosphere is the only one of all the planets where nitrogen is the main ingredient – greater even than oxygen. Our study shows this nitrogen could have emerged from deep inside the planet.

Contacts and sources:
Catriona Kelly
University of Edinburgh

Citation: Metallization and molecular dissociation of dense fluid nitrogen Shuqing Jiang, Nicholas Holtgrewe, Sergey S. Lobanov, Fuhai Su, Mohammad F. Mahmood, R. Stewart McWilliams & Alexander F. Goncharov Nature Communications volume 9, Article number: 2624 (2018) http://dx.doi.org/10.1038/s41467-018-05011-z



Source: http://www.ineffableisland.com/2018/07/how-earths-core-formed-10-billion-years.html

We encourage you to Share our Reports, Analyses, Breaking News and Videos. Simply Click your Favorite Social Media Button and Share.

Report abuse

Comments

Your Comments
Question Razz Sad Evil Exclaim Smile Redface Biggrin Surprised Eek Confused Cool LOL Mad Twisted Rolleyes Wink Idea Arrow Neutral Cry Mr. Green

Total 1 comment
  • Anonymous

    How the Hell would they know since man has never been able to get deeper than 9 miles?

Top Stories
Recent Stories
 

Featured

Top Global

Top Alternative

Register

Newsletter

Email this story
Email this story

If you really want to ban this commenter, please write down the reason:

If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.