While most of us take the ground beneath our feet for granted, written within its complex layers, like the pages of a book, is Earth's history.
Research shows there are little-known chapters in that history, deep within Earth's past. In fact, Earth's inner core appears to have another even more inner core within it.
From these indirect observations, scientists have calculated that the scorchingly hot inner core, with temperatures surpassing 5,000 degrees Celsius , makes up only 1 percent of Earth's total volume. While some models suggest the material of the inner core channels seismic waves faster parallel to the equator, others indicate the mix of materials allows for faster waves more parallel to Earth's rotational axis. Even then, there are arguments about the exact degree of difference at certain angles.
"We found evidence that may indicate a change in the structure of iron, which suggests perhaps two separate cooling events in Earth's history," Stephenson"The details of this big event are still a bit of a mystery, but we've added another piece of the puzzle when it comes to our knowledge of the Earth's inner core."has been inconsistent with our current models of Earth's structure.
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Astronomers Detect a Mass Migration of Stars Converging on AndromedaAstronomers know that galaxies grow over time through mergers with other galaxies.
Read more »
Chinese police trained squirrels to detect drugs at the borderThings are getting nutty at China’s border.
Read more »
Machine Learning is a Powerful Tool When Searching for ExoplanetsA new machine learning technique will help astronomers detect young exoplanets in disks surrounding other stars.
Read more »
Planetary Defense: Asteroid Racing Toward Earth Discovered Just Hours Before ImpactSeventh Shooting Star Ever Spotted Before Impact For the seventh time, a small asteroid – a meteoroid as astronomers call it – was discovered in space as it raced towards Earth for impact. The predicted time and location of the impact (02:50 - 03:03 UTC, above northern France) were made possible wi
Read more »
Cocaine Addiction Makes The Human Brain 'Age' Faster, Scientists WarnOur brains experience a litany of changes as we age, right down to the way its DNA is translated.
Read more »
Asteroid hits Earth hours after being spotted, meteor turns into 'beautiful' fireball over EuropeAsteroid 2023 CX1 was spotted in Europe Sunday night and hours later the meteor was seen burning across the sky over France and throughout the region
Read more »