Astronomy Picture of the Day

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

                               2020 January 26
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                      Hills, Ridges, and Tracks on Mars
   Image Credit: [3]NASA, [4]JPL-Caltech, [5]MSSS; Processing & Copyright:
                              [6]Thomas Appere

   Explanation: Sometimes, even rovers on Mars stop to admire the scenery.
   Just late last November the [7]Curiosity rover on [8]Mars paused to
   photograph its [9]impressive surroundings. One thing to admire,
   straight ahead, was [10]Central Butte, an unusual [11]flat hill studied
   by Curiosity just a few days before this image was taken. To its right
   was distant [12]Mount Sharp, the five-kilometer central peak of entire
   [13]Gale crater, the interior of which Curiosity is exploring. Mount
   Sharp, covered in [14]sulfates, appears quite bright in [15]this
   colorized, red-filtered image. To the far left, shrouded in a very dark
   shadow, was the south slope of [16]Vera Rubin ridge, an elevation
   explored previously by Curiosity. [17]Between the ridge and butte were
   tracks left by Curiosity's wheels as they rolled forward, out of the
   scene. In the image foreground is, of course, humanity's current eyes
   on Mars: the complex robotic rover [18]Curiosity itself. Later this
   year, if all goes well, [19]NASA will have [20]another rover -- and
   more eyes -- on Mars. Today you can [21]help determine the name of this
   rover yourself, but tomorrow is the last day to cast your vote.

                Help Name the Mars 2020 Rover: [22]Vote here!
                    Tomorrow's picture: evaporating comet
     __________________________________________________________________

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    Authors & editors: [34]Robert Nemiroff ([35]MTU) & [36]Jerry Bonnell
                                 ([37]UMCP)
          NASA Official: Phillip Newman [38]Specific rights apply.
              [39]NASA Web Privacy Policy and Important Notices
                A service of: [40]ASD at [41]NASA / [42]GSFC
                           & [43]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2001/HillsRidgesTracks_Curiosity_2725.jpg
   3. http://www.nasa.gov/
   4. http://www.jpl.nasa.gov/
   5. http://www.msss.com/
   6. https://www.flickr.com/people/thomasappere/
   7. https://mars.nasa.gov/msl/home/
   8. https://solarsystem.nasa.gov/planets/mars/overview/
   9. https://mars.nasa.gov/msl/mission-updates/8559/sols-2597-2599-a-bounty-of-targets/
  10. https://mars.nasa.gov/msl/mission-updates/8542/sols-2577-2578-en-route-around-central-butte/
  11. https://apod.nasa.gov/apod/ap161005.html
  12. https://en.wikipedia.org/wiki/Mount_Sharp
  13. https://apod.nasa.gov/apod/ap110729.html
  14. https://en.wikipedia.org/wiki/Sulfate
  15. https://www.flickr.com/photos/thomasappere/49380893923/in/dateposted-public/
  16. https://apod.nasa.gov/apod/ap180910.html
  17. https://apod.nasa.gov/apod/ap191220.html
  18. https://apod.nasa.gov/apod/ap171120.html
  19. https://www.nasa.gov/
  20. https://www.youtube.com/watch?v=7SFh4TZRXHg
  21. https://mars.nasa.gov/mars2020/participate/name-the-rover/
  22. https://mars.nasa.gov/mars2020/participate/name-the-rover/
  23. https://apod.nasa.gov/apod/ap200125.html
  24. https://apod.nasa.gov/apod/archivepix.html
  25. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  26. https://apod.nasa.gov/apod/lib/aptree.html
  27. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  28. https://apod.nasa.gov/apod/calendar/allyears.html
  29. https://apod.nasa.gov/apod.rss
  30. https://apod.nasa.gov/apod/lib/edlinks.html
  31. https://apod.nasa.gov/apod/lib/about_apod.html
  32. http://asterisk.apod.com/discuss_apod.php?date=200126
  33. https://apod.nasa.gov/apod/ap200127.html
  34. http://www.phy.mtu.edu/faculty/Nemiroff.html
  35. http://www.phy.mtu.edu/
  36. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  37. http://www.astro.umd.edu/
  38. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  39. https://www.nasa.gov/about/highlights/HP_Privacy.html
  40. https://astrophysics.gsfc.nasa.gov/
  41. https://www.nasa.gov/
  42. https://www.nasa.gov/centers/goddard/
  43. http://www.mtu.edu/