Professor Sun says, "Mars exhibits significantly less tectonic activity compared to Earth ... despite being nearly half the size of Earth, possesses such a thicker crust. "Second, we will seek ...

Recent images from the Mars Express spacecraft reveal this ancient lakebed, surpassing any Earth lake in size and volume Lake Eridania, identified by the Mars Express spacecraft, was the largest ...

But this was not Earth - this was the young Mars. Professor Brian Cox continues his tour of the solar system, revealing that it was once home to not one, but two blue planets. For millions of ...