Add Yahoo as a preferred source to see more of our stories on Google. The so-called Candor Tetrahedron. (NASA/JPL-Caltech/UArizona) It would be tempting to assume there's nothing much of note ...

A pyramid-like structure first seen on Mars in 2001 has renewed debate on whether human-like creatures inhabited the planet billions of years ago. The image was captured by NASA’s Mars Global Surveyor ...

Using images from cameras on Mars orbiters, an international research team has discovered structures on Mars that are very similar to classic river deltas on Earth. These are traces of rivers that ...

It would be tempting to assume there's nothing much of note happening on Mars, but that dusty rusty planet has a lot of ...