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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Researchers believe they have found several blobs within Mars that were leftover from giant impacts with "protoplanets" up to 4.5 ...

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 ...

Mars’ interior is lumpy, with rocky material left over from ancient impacts deep in its mantle. That’s the finding of a new study by researchers in the U.K., France and the U.S. The researchers said ...

Contrary to Earth, present-day Mars has little to no volcanic or tectonic activity. Furthermore, almost half of the planet’s surface is more than 3.5 billion years old, which can only mean that there ...

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 ...