In a new paper published in Physical Review X, researchers present compelling evidence for a “helicity barrier”—a previously ...

Or perhaps there is no need for the presence of a dynamo-driven magnetic field at all. For instance, the authors of a 2021 study thought earlier analyses of lunar samples may have been altered ...

For the study, the researchers used computer models based on data obtained from NASA’s now-retired Mars InSight lander to simulate conditions within the interior of Mars depicting the absence of an ...

Molten Martian core could explain red planet's magnetic quirks Date: April 15, 2025 Source: University of Texas at Austin Summary: First ever supercomputer simulations of Mars with a fully molten ...

First ever supercomputer simulations of Mars with a fully molten core could explain the Red Planet's unusual magnetic field. Billions of years ago, Mars had an active magnetic field ...

If Mars' core is molten now, it almost certainly would have been molten 4 billion years ago when Mars' magnetic field is known to have been active, Stanley said. To test the idea, the researchers ...

Researchers studying decades of earthquake data say they have found the first evidence that, in addition to spinning backward, Earth’s inner core in changing shape.

Earth’s outer core is made up of mostly molten iron, a liquid metal. Unpredictable changes in the way it flows cause the magnetic field around the Earth to shift, which then causes the magnetic ...

Earth’s inner core is a hot, solid ball—about 20% of Earth’s radius—made of an iron alloy. The planet’s outer core, beneath the rocky mantle, is a colder, liquid metal. Geophysics models explain that, ...

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A doughnut-shaped region thousands of kilometers beneath our feet within Earth's liquid core has been discovered, providing new clues about the dynamics of our planet's magnetic field.

A doughnut-shaped region thousands of kilometres beneath our feet within Earth’s liquid core has been discovered by scientists from The Australian National University (ANU), providing new ...