The Earth's geology is very active. It is effectively a 4.6 billion year old "rock blender" that has recycled its surface material to the point that no rocks exist on Earth's surface that can be dated back to the time of its formation. In addition, the Earth has an atmosphere, which erodes the surfa...

A momentous occasion has been bestowed upon us. The Mars Polar Lander will try to reach its destination of Mars' southern polar ice cap. The Lander was presumed to touch down on Friday December 3, 1999. It was launched from Cape Canaveral Air Force Station Space Launch Complex 17 on January 3...