|Exposing the Rock in Impact Craters|
Impact cratering allows scientists to study the bedrock of Mars that normally lies under a coating of red-colored dust.
The geologic history of a planet is written in its layers.
|A Dune Field near Nili Patera|
The orientation of these dunes tells us the direction of the prevailing wind.
|Wind Flow |
The ripples in the sand tell us which way the wind was moving and how it was diverted around these rock formations.