Engineers are developing a concept for exploring one of Mars’ least accessible environments: its underground tunnel systems. Their proposal combines a rolling robot inspired by a pillbug with ...

For all the drama around getting to Mars, the harder question starts after landing. A person can step onto the planet with food, water and shelter plans in place, but none of that matters for long ...

Scientists edge closer to answering Mars’ biggest question: Did life ever exist on the red planet? Here's the latest from two new finds.