HiRISE: High Resolution Imaging Science Experiment http://uahirise.org Image updates from the HiRISE Camera onboard the Mars Reconnaissance Orbiter en-us editor@uahirise.org (Ari) Wed, 29 Oct 2014 10:15:00 MST Sand Sources Near Athabasca Valleshttp://uahirise.org/ESP_038224_1890This image shows a small channel cutting into young volcanic lavas in a region where massive catastrophic flooding took place in the relatively recent past.Hardened Dunes in Arcadia Planitiahttp://uahirise.org/ESP_038143_2205There are several lines of evidence indicating that the dunes have become hardened into cohesive sediment or even into sandstone rock.Search for the Mars 2 Debris Fieldhttp://uahirise.org/ESP_037371_1350The Soviet Mars 2 lander was the first man-made object to touch the surface of the Red Planet when it crashed landed on 27 November 1971.Which Way is Up?http://uahirise.org/ESP_035969_1825We have seen much evidence for lava flows in this region that flowed to much higher levels than the present surface, then deflated or drained away. BeautifulMars Meets Beautiful Persian http://www.uahirise.org/epo/beautiful-mars/persian/ HiRISE now has a new Tumblr and Twitter in Persian! (Farsi) The 4Q&A http://www.uahirise.org/epo/4qa/diniega This week: Serina Diniega, planetary scientist and HiRISE team member.