[meteorite-list] MRO HiRISE Images - July 18, 2012

[Ron Baalke]

MARS RECONNAISSANCE ORBITER HIRISE IMAGES
July 18, 2012

o Flows in Hellas Planitia	
  http://hirise.lpl.arizona.edu/ESP_025925_1420

  The floor of Hellas includes the lowest elevations on Mars 
  and some of the strangest landscapes.

o Gully Monitoring on Crater Slopes in Terra Sirenum	
  http://hirise.lpl.arizona.edu/ESP_027343_1410

  The possible role of seasonal frost in gully formation along 
  with the association of polygonal terrain with these and other 
  gullies has garnered considerable interest.

o Frosted Gully Landforms	
  http://hirise.lpl.arizona.edu/ESP_027647_1395

  In the Martian winter, frost--mostly carbon dioxide--can build 
  up in the gullies, especially on the cold slopes that face the pole.

o A Fading Impact Crater	
  http://hirise.lpl.arizona.edu/ESP_027806_1700

  This cluster of craters formed quite recently from a weak impactor 
  that broke apart in Mars' thin atmosphere before smashing into the surface.

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.