                   APOD: 2017 July 19 - Ireson Hill on Mars

                         Astronomy Picture of the Day

    Discover the cosmos! [1] Each day a different image or photograph of our
 fascinating universe is featured, along with a brief explanation written by a
                           professional astronomer.

                                 2017 July 19
                                      [2]
                             Ireson Hill on Mars
              Image Credit: NASA [3] , JPL-Caltech [4] , MSSS [5]

Explanation: What created this unusual hill on Mars? Its history has become a
topic of research, but its shape and two-tone structure makes it one of the
more unusual hills that the robotic Curiosity rover on Mars has rolled near.
Dubbed Ireson Hill [6] , the mound rises [7] about 5 meters high and spans [8]
 about 15 meters across. Ireson Hill [9]  is located on the Bagnold Dune field
[10]  on the slope of Mount Sharp [11]  in Gale Crater [12]  on Mars [13] .
The featured 41-image panorama [14]  has been horizontally compressed [15] to
include the entire hill. The image was taken on February 2 and released last
week. Because Mars [16]  is moving behind the Sun [17] as seen from the Earth
[18] , NASA [19]  will soon stop sending commands [20] to its Martian orbiters
and rovers [21]  until about August 1.

              Explore the Universe: Random APOD Generator [22]
                      Tomorrow's picture: open space [23]

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    Authors & editors: Robert Nemiroff [35] (MTU [36] ) & Jerry Bonnell [37]
                                  (UMCP [38] )
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Site notes:
  [1] archivepix.html
  [2] image/1707/IresonHill_Curiosity_6720.jpg
  [3] https://www.nasa.gov/
  [4] https://www.jpl.nasa.gov/
  [5] http://www.msss.com/
  [6]
https://astrogeology.usgs.gov/news/astrogeology/
sols-1598-1599-imaging-ireson-hill
  [7] http://redplanet.asu.edu/?p=22343
  [8] http://redplanet.asu.edu/?p=22318
  [9]
http://www.planetary.org/multimedia/space-images/mars/
ireson-hill-curiosity-sol-1598.html
  [10] http://adsabs.harvard.edu/abs/2016EGUGA..18.9711B
  [11] ap120827.html
  [12] ap110729.html
  [13] https://solarsystem.nasa.gov/planets/mars
  [14] https://photojournal.jpl.nasa.gov/catalog/PIA21718
  [15] http://s.orzzzz.com/news/2f/e6//56f0f14c55617.jpg
  [16] https://mars.nasa.gov/
  [17] https://mars.nasa.gov/news/mars-conjunction
  [18] ap070325.html
  [19] https://www.nasa.gov/
  [20] https://www.jpl.nasa.gov/news/news.php?release=2017-191
  [21] https://www.youtube.com/watch?v=JXZa8cmab1g
  [22] https://apod.nasa.gov/apod/random_apod.html
  [23] ap170720.html
  [24] ap170718.html
  [25] archivepix.html
  [26] lib/apsubmit2015.html
  [27] lib/aptree.html
  [28] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [29] calendar/allyears.html
  [30] /apod.rss
  [31] lib/edlinks.html
  [32] lib/about_apod.html
  [33] http://asterisk.apod.com/discuss_apod.php?date=170719
  [34] ap170720.html
  [35] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [36] http://www.phy.mtu.edu/
  [37] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [38] http://www.astro.umd.edu/
  [39] lib/about_apod.html#srapply
  [40] https://www.nasa.gov/about/highlights/HP_Privacy.html
  [41] https://astrophysics.gsfc.nasa.gov/
  [42] https://www.nasa.gov/
  [43] https://www.nasa.gov/centers/goddard/
  [44] http://www.mtu.edu/
