Believed to be the oldest desert in the world, it is so similar to the Red Planet that NASA has conducted tests.

Mars may seem like a barren, lifeless world today, but 3 to 4 billion years ago, conditions were very different. Geological ...

Compared to Valles Marinensis, the Grand Canyon of Colorado is tiny, measuring 446 kilometers long, with a maximum width of ...

On Episode 129 of This Week In Space, Rod and Tariq talk with Pascal Lee about his Mars Simulation Base in the Arctic.

NASA's two car-sized labs exploring Mars each discovered rocks that neither mission had seen before, revealing a more diverse ...