THE BEGINNING – 4.5 BILLION YEARS AGO On Mars, this stage is called the Pre Noachian era. Mars had just formed from dust and ...

The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

An international team of scientists has identified a completely new type of rock from the red planet and, for the first time, discovered the mineral garnet in a Martian sample. The breakthrough offers ...