The following new images taken by the High Resolution Imaging Science Experiment (HiRISE) on the Mars Reconnaissance Orbiter spacecraft are now available:

• North Polar Layered Deposits, Covered by Seasonal Frost
  This image shows an exposure of the north polar layered deposits.


• Large Polygons in Deuteronilus Mensae
  This image reveals hexagonal and polygonal patterns formed by networks of soil troughs on the floor of a valley in the Deuteronilus Mensae region.


• Northern Hemisphere Ice Cap
  This image shows layering within the northern hemisphere ice cap, which probably reflects seasonal variability in accumulation of the ice versus sublimation.


• Slab of Layered Material in Aureum Chaos
  This image shows a large outcrop of layered rock in Aureum Chaos, an area that has apparently collapsed, leaving a region of irregular knobs and hills.


• Relict Glacial Landform in Deuteronilus Mensae
  This image shows remnant raised margins and other interior structures of a lobate flow feature emanating the mouth of an alcove along a mesa in Deuteronilus Mensae.


• Gullies in Sirenum Fossae
  This image shows parts of Sirenum Fossae that are southwest of Gorgonum Chaos.


• Landslide in Xanthe Terra
  This image shows a landslide along the margin of a small mesa in the Xanthe Terra region of Mars.

Primary Science Phase images.