[meteorite-list] MRO HiRISE Images: February 22, 2012

From: Ron Baalke <baalke_at_meteoritecentral.com>
Date: Thu, 23 Feb 2012 13:13:39 -0800 (PST)
Message-ID: <201202232113.q1NLDdur006505_at_zagami.jpl.nasa.gov>

MARS RECONNAISSANCE ORBITER HIRISE IMAGES
February 22, 2012

o Well-Speckled Polar Dunes
  http://hirise.lpl.arizona.edu/ESP_025579_2580

  In this image, taken during the northern spring season, the
  dunes and ground are still covered in seasonal frost.

o Utopia Planitia Scallops, Polygons, and Boulders
  http://hirise.lpl.arizona.edu/ESP_025620_2275

  This terrain is covered by pits and scallops (pits open on
  one side), perhaps due to collapse after sublimation of
  subsurface ice.

o Dunes in Late Fall: Frost in the Ripples
  http://hirise.lpl.arizona.edu/ESP_025679_1300

  These dunes in Aonia Terra are being monitored for changes such
  as gullies, which form over the winter from the action of carbon
  dioxide frost.

o Imaging in Deep Shadows
  http://hirise.lpl.arizona.edu/ESP_025680_1350

  This image of an impact crater was acquired when the sun was
  just 11 degrees above the horizon, so a long shadow extends over
  most of the crater interior.

All of the HiRISE images are archived here:

http://hirise.lpl.arizona.edu/

Information about the Mars Reconnaissance Orbiter is
online at http://www.nasa.gov/mro. The mission is
managed by NASA's Jet Propulsion Laboratory, a division
of the California Institute of Technology, for the NASA
Science Mission Directorate, Washington, D.C. Lockheed
Martin Space Systems, of Denver, is the prime contractor
and built the spacecraft. HiRISE is operated by the
University of Arizona. Ball Aerospace and Technologies
Corp., of Boulder, Colo., built the HiRISE instrument.
Received on Thu 23 Feb 2012 04:13:39 PM PST