Traditionally we've been taught the Earth has four primary layers. Though, a distinct change at depth suggests there's another.
The latest findings suggest that the 'innermost inner core' may be an iron ball with a radius of about 650 kilometers inside the inner core. This could indicate a dramatic event in our planet's history and improve our understanding of Earth's genesis and evolution.Ray paths of fivefold reverberating waves along the Earth's diameterIn the new study, Thanh-Son Phạm and Hrvoje Tkalčić from the Australian National University collated data from existing probes.
They also advised that better to comprehend Earth's deep interior and its generation history, future research should concentrate on characterizing the transition between the innermost inner core and the inner core's outer shell.: the crust, the mantle, the outer core, and the inner core. Though Earth's solid inner core makes up less than 1 percent of Earth's total volume, it has played a significant part in our planet's evolution- particularly in the generation of Earth's magnetic field. However, since its discovery in 1936, the inner core has remained particularly enigmatic.In fact, the idea of an additional separate layer within the inner core was put forth a few decades ago due to evidence pointing towards a change of composition at depth.
Geophysicist Adam Dziewonski and seismologist Miaki Ishii were the first scientists to explain the discrepancies in specific fit to travel-time wave models of the Inner Core. Still, probing the Earth's innermost inner core has been challenging due to a lack of probes sensitive enough to sample the Earth's deep interior. Additionally, the status of the innermost inner core as a distinct entity remains contested, with detractors arguing that anomalous data can be explained with other methods.
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Bouncing seismic waves reveal distinct layer in Earth's inner coreData captured from seismic waves caused by earthquakes has shed new light on the deepest parts of Earth's inner core, according to seismologists from The Australian National University (ANU).
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Earth's inner core may have another layer hidden withinScientists have found that there is an extra innermost core at the center of the Earth made entirely of iron, measuring 400 miles in diameter.
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Earth's innermost layer is a 400-mile-wide ball of iron, new study suggests | CNNScientists have long wondered what lies at the very center of the Earth, and the latest research is putting weight behind a theory that our planet has a distinct ball of iron within its metallic core
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There Could Be Upward-Moving Silicon-Rich 'Snow' in Earth's Outer CoreBy listening to the echo of earthquakes bouncing about inside our planet, we can make a good guess at what's inside Earth without slicing it up.
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