NASA/Theophilus Britt Griswold. Contrary to Earth, present-day Mars has little to no volcanic or tectonic activity.

New research into the interior of Mars further emphasizes that the Red Planet is a world of two very different halves.

New research has uncovered a major mystery deep inside Mars, where differences between the planet’s northern and southern regions reveal an unexpected internal structure. The findings, published in ...

Astronauts train to scale a Mars volcano at an analogue site in France. Lava tubes that crisscross the Martian surface might provide sanctuaries for the first human explorers on the Red Planet. (Photo ...

NASA scientists have uncovered massive fragments of ancient planetary collisions buried deep within Mars’ mantle, shedding light on the planet’s tumultuous early history. Preserved for over four ...

Add Yahoo as a preferred source to see more of our stories on Google. The interior of Mars is as chunky as a delicious macadamia cookie. A new analysis of the acoustic waves that ripple through and ...

New research published in the journal Science reveals the red planet's mantle preserves a record of its violent beginnings. The inside of Mars isn't smooth and uniform like familiar textbook ...

Mars isn’t the neatly layered world we once imagined — its mantle is filled with ancient, jagged fragments left over from colossal impacts billions of years ago. Seismic data from NASA’s InSight ...

It's time now for our science news roundup from Short Wave, NPR's science podcast. I am joined by the show's two hosts, Regina Barber and Emily Kwong. Hi, y'all. EMILY KWONG, BYLINE: Hi. REGINA BARBER ...