Steele and her team proposed that Mars's global magnetic field did not disappear 4.1 billion years ago, as previously thought, but lasted until at least 3.9 billion years ago.

This all-liquid core helps explain why Mars’ ancient magnetic field was much stronger in the southern hemisphere, solving a decades-old mystery about the planet’s magnetic asymmetry.

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 ...

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 ...

Astronomy Solar System Mars Mars is covered in evidence of ancient lakes, rain and snow — but scientists aren't sure how that's possible News By Victoria Corless published April 24, 2025 ...

NASA's Perseverance rover has revealed new clues about Mars' volcanic past. While most people searching for signs of alien life these days might have their eyes on the exoplanet K2-18b, one team ...

New research suggests ancient Red Planet precipitation was a lot like Earth It's hard to figure out if Mars was “warm and wet” in its ancient past, but climate models give us clues ...

Mars has shone red in the night sky for as long as humans have gazed up at the cosmos, fascinating people from the ancient Romans to the present day. "The fundamental question of why Mars is red ...

According to Cardenas, it is unclear how far Mars' ancient beaches might have stretched in total—but the present evidence suggests they grew out into the ocean basin for at least 0.8 miles.