News tagged with earths core

Ironing out the details of the Earth's core

(PhysOrg.com) -- Identifying the composition of the earth's core is key to understanding how our planet formed and the current behavior of its interior. While it has been known for many years that iron is ...

Space & Earth / Earth Sciences

created Dec 20, 2011 | popularity 4.9 / 5 (11) | comments 7 | with audio podcast

Debut of chromium signatures clocks great oxidation event

Banded ironstone core samples from the Pilbara have aided in dating the first appearance of atmospheric oxygen at 2.48 billion years ago.

Space & Earth / Earth Sciences

created Nov 25, 2011 | popularity 5 / 5 (3) | comments 4

From the Earth to the Moon: Resolving estimates of proto-Earth accretion with lunar-forming impact

(PhysOrg.com) -- One of the more challenging fields of scientific inquiry is planetary formation – and most relevant is that of our own Earth and Moon. The current view, based on chronometry (scientific ...

Space & Earth / Astronomy

created Nov 14, 2011 | popularity 5 / 5 (8) | comments 16 | with audio podcast feature

How old is the Earth's core? Maybe older than you thought

(PhysOrg.com) -- Another discovery by a Michigan Technological University researcher could send shockwaves across the world of earth science.

Space & Earth / Earth Sciences

created Nov 12, 2011 | popularity 4.7 / 5 (23) | comments 45 | with audio podcast

What keeps the Earth cooking?

What spreads the sea floors and moves the continents? What melts iron in the outer core and enables the Earth's magnetic field? Heat. Geologists have used temperature measurements from more than 20,000 boreholes ...

Physics / General Physics

created Jul 17, 2011 | popularity 4.6 / 5 (24) | comments 50 | with audio podcast

Ocean floor muddies China's grip on '21st-century gold'

China's monopoly over rare-earth metals could be challenged by the discovery of massive deposits of these hi-tech minerals in mud on the Pacific floor, a study on Sunday suggests.

Space & Earth / Earth Sciences

created Jul 03, 2011 | popularity 4.9 / 5 (15) | comments 21

Earth's inner core is melting... and freezing

The inner core of the Earth is simultaneously melting and freezing due to circulation of heat in the overlying rocky mantle, according to new research from the University of Leeds, UC San Diego and the Indian ...

Space & Earth / Earth Sciences

created May 18, 2011 | popularity 4.6 / 5 (13) | comments 10 | with audio podcast

Going to Earth's core for climate insights

(PhysOrg.com) -- The latest evidence of the dominant role humans play in changing Earth's climate comes not from observations of Earth's ocean, atmosphere or land surface, but from deep within its molten core.

Space & Earth / Earth Sciences

created Mar 10, 2011 | popularity 4.2 / 5 (18) | comments 19 | with audio podcast

Earth's core rotating faster than rest of the planet but slower than previously believed

New research gives the first accurate estimate of how much faster the Earth's core is rotating compared to the rest of the planet.

Space & Earth / Earth Sciences

created Feb 20, 2011 | popularity 4.3 / 5 (27) | comments 17 | with audio podcast

Antarctic sea temperatures cooled in Holocene but now rising: study

(PhysOrg.com) -- A new study of an ocean sediment core taken from deep water off the coast of the western Antarctic Peninsula is beginning to fill in some of the gaps in our knowledge of climate variability ...

Space & Earth / Earth Sciences

created Feb 10, 2011 | popularity 4.2 / 5 (18) | comments 20 | with audio podcast report

The hunt for the lunar core: Deep interior of moon resembles Earth's core

(PhysOrg.com) -- The Moon, Earth's closest neighbor, has long been studied to help us better understand our own planet. Of particular interest is the lunar interior, which could hold clues to its ancient origins. ...

Space & Earth / Space Exploration

created Jan 06, 2011 | popularity 5 / 5 (10) | comments 6 | with audio podcast

First measurement of magnetic field in Earth's core

(PhysOrg.com) -- A University of California, Berkeley, geophysicist has made the first-ever measurement of the strength of the magnetic field inside Earth's core, 1,800 miles underground.

Space & Earth / Earth Sciences

created Dec 16, 2010 | popularity 4.9 / 5 (19) | comments 10 | with audio podcast

Gradients in the Earth's outermost core

Evidence that the outermost portion of the Earth’s core is stratified is provided by earthquake data reported by scientists at the University of Bristol this week in Nature.

Space & Earth / Earth Sciences

created Dec 08, 2010 | popularity 3.8 / 5 (4) | comments 1 | with audio podcast

Planetary magnetic fields: The hunt for better models

Some three thousand kilometers below the surface of the Earth and with temperatures reaching those at the surface of the sun, the core of our home planet is no more within our physical reach today than it ...

Space & Earth / Space Exploration

created Nov 25, 2010 | popularity 4.9 / 5 (10) | comments 4 | with audio podcast

Scientists probe Earth's core

We know more about distant galaxies than we do about the interior of our own planet. However, by observing distant earthquakes, researchers at the University of Calgary have revealed new clues about the top ...

Space & Earth / Earth Sciences

created Apr 28, 2010 | popularity 4.4 / 5 (20) | comments 4 | with audio podcast