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

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. The findings, published in the journal Science, may change what we know about the formation of rocky planets like Mars, Venus and ...

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 ...

We know Mars to be many things: dusty, cold, and missing a global magnetic field. In a recent discovery that baffled scientists, a space weather phenomenon previously associated with powerful magnetic ...

Researchers from the University of Oxford have uncovered evidence that Mars once hosted enormous, Earth-like magmatic systems deep beneath its surface – despite the planet lacking the plate tectonics ...