Learn about Mars' defunct magnetic field, which may have sustained life on the planet and covered only its southern ...

In a nutshell Mars likely never developed a solid inner core during its early history, meaning its magnetic field was generated by a fully molten core, unlike Earth’s layered core structure. This ...

Energy is needed to keep the dynamo running. This energy comes ... Without the effects caused by the spinning Earth, the magnetic fields generated within the liquid core would cancel one another ...

Why is the earth a magnet? The best answer at present is that the slow flow of matter in its fluid core generates electric currents, which in turn set up a magnetic field By Walter M. Elsasser ...

"That could have implications for Mars' ancient dynamo and possibly how long it was able to sustain an atmosphere." Until now, most studies of early Mars had relied on magnetic field models that gave ...

When set spinning, the setup mimics the roiling liquid iron in the Earth’s outer core, which forms electrical currents that generate the magnetic field in a process called a dynamo. His team ...

The Earth's magnetic field is created deep within our planet's outer core through a complex, self-sustaining interaction known as the "geomagnetic dynamo" (see What Drives Earth's Magnetic Field?).

Like Earth, Mars once had a strong magnetic field that shielded its thick atmosphere from the solar wind. But now only the magnetic imprint remains ...

Did Mars once have a full magnetic field in its ancient past like Earth does today, or was it lopsided and only covered ...