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

[Ron Baalke]

MARS RECONNAISSANCE ORBITER HIRISE IMAGES
April 18, 2012

o Active Dune Gullies in Kaiser Crater	
  http://hirise.lpl.arizona.edu/ESP_025900_1330

  Gullies remain an interesting feature to study on Mars, especially 
  because we are still learning about their formation and what processes 
  still act on them.

o Disappearing Boulder Tracks	
  http://hirise.lpl.arizona.edu/ESP_026055_1985

  This follow-up image to an earlier observation shows that the smaller 
  dark tracks are gone, and the larger ones have faded considerably.

o Late Springtime Defrosting of Northern Dunes	
  http://hirise.lpl.arizona.edu/ESP_026226_2565

  Every winter, dunes and other surfaces at these northern latitudes are 
  coated with several tens of centimeters of carbon dioxide frost and ice, 
  plus a minor amount of water frost.

o Landslides in an Impact Crater	
  http://hirise.lpl.arizona.edu/ESP_026515_1435

  The many large landslides inside Valles Marineris are well known, but  
  there are also landslides elsewhere on Mars.

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.