HiRISE: High Resolution Imaging Science Experiment http://uahirise.org Image updates from the HiRISE Camera onboard the Mars Reconnaissance Orbiter en-us webmaster@pirl.lpl.arizona.edu (The Folks at HiRISE) Wed, 1 Feb 2012 12:00:00 MST Another Well-Preserved Impact Craterhttp://uahirise.org/ESP_025450_1595When seen at full resolution, almost all craters on Mars show some modification such as subsequent smaller impacts, and downslope movement of material on steep slopes.Active Erosion in Pasteur Craterhttp://uahirise.org/ESP_025372_2000This image shows knobs and bluffs that are being actively eroded by the Martian wind.Crater with Gullies on a Central Structurehttp://uahirise.org/ESP_025082_2295The formation of channels on the debris aprons supports the hypothesis that these sediments were transported down the gullies and then deposited onto the aprons by flowing water.The Floor of Toro Craterhttp://uahirise.org/ESP_025067_1970Toro Crater may have experienced hydrothermal alteration, producing diverse minerals. February 2012 PDS Release http://www.uahirise.org/releases/feb_12.php Our monthly data release to the Planetary Data System with over 400 new observations. HiClips: Rve martien http://www.uahirise.org/media New HiClip for this week's release, plus individual clips for our spotlight images. HiFlyers http://www.uahirise.org/epo/hiflyers New hiFlyers for this week's release, 11x17, PDF format, 1 Feb 2012. HiSlides http://www.uahirise.org/epo/hislides New HiSlides for this week's release, 1 Feb 2012.