These images, taken by NASA and the High Resolution Imaging Science Experient (HiRISE) at the University of Arizona, take an up-close look at the surface of Mars. This image shows possible evaporites in the planet's Coprates region.
In this photo, dunes are seen on the Martian surface. In September 2009 NASA and HiRISE released some 1,512 images of the planet taken between April and August of that year.
These images of Mars come from NASA and the High Resolution Imaging Science Experient (HiRISE) at the University of Arizona. HiRISE's camara returns images of the Martian surface with higher resolution than ever seen before from an orbiter, bringing out details like this sulfate strata in Ius Chasma.
The central structure of an impact crater is seen on the Martian surface.
Translucent ice is seen on the surface of Mars in this image taken by NASA and a camara from the High Resolution Imaging Science Experient (HiRISE) at the University of Arizona.
Possible hydrate-rich terrain is seen on the surface of the planet Mars in this image taken in April 2009, from NASA and the High Resolution Imaging Science Experient (HiRISE) at the University of Arizona.
Mantled deposits are seen here in Mars' Aonia Region in this image taken by NASA and a camara from the High Resolution Imaging Science Experient (HiRISE) at the University of Arizona.
This image is an exposure of layered deposits on the planet's South Pole.
Sulfate-Rich Layers are seen here in a crater wall in the Tyrrhena Terra region of Mars.
Gullies are seen on the southwest slope of Ring Trough in Mars' Noachis Terra region. According to HiRISE, Scientists are excited to study these features because, on Earth, they usually form through the presence of liquid water - long thought to be absent on the Martian surface.