A surprising reversal in molten iron flow beneath the Pacific is giving scientists a sharper view of how Earth’s magnetic ...

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. What's long baffled scientists, though, is why this ...

Add Yahoo as a preferred source to see more of our stories on Google. Swarm constellation satellites and ground data reveal a startling 2010 reversal in molten core flow beneath the Pacific and ...

A new NASA study reveals a surprising way planetary cores may have formed—one that could reshape how scientists understand the early evolution of rocky planets like Mars. Conducted by a team of ...

Mars has a solid inner core, according to a new study published in Nature. Using seismic data from NASA’s InSight lander, researchers identified a dense, solid core about 600 kilometers wide, ...

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. Mysteriously, its ...

A river of molten iron, more than 2,000 kilometers below the surface, appears to have pulled off something Earth scientists did not expect. Around 2010, a broad patch of fluid in the outer core ...