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 October 8
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                                Mare Frigoris
                 Image Credit & [3]Copyright: [4]Matt Smith

   Explanation: Lighter than typically [5]dark, smooth, mare the [6]Mare
   Frigoris lies in the far lunar north. Also known as the Sea of Cold,
   [7]it stretches across the familiar lunar nearside in this close up of
   the waxing gibbous Moon's north polar region. Dark-floored, 95
   kilometer wide crater Plato is just left of the center. [8]Sunlit peaks
   of the lunar Alps (Montes Alpes) are highlighted below and right of
   Plato, between the more southern Mare Imbrium (Sea of Rains) and Mare
   Frigoris. The prominent straight feature cutting through the mountains
   is the [9]lunar Alpine Valley (Vallis Alpes). Joining the Mare Imbrium
   and Mare Frigoris, the lunar valley is about 160 kilometers long and up
   to 10 [10]kilometers wide.

                   Tomorrow's picture: a very large array
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    Authors & editors: [22]Robert Nemiroff ([23]MTU) & [24]Jerry Bonnell
                                 ([25]UMCP)
          NASA Official: Phillip Newman [26]Specific rights apply.
              [27]NASA Web Privacy Policy and Important Notices
                A service of: [28]ASD at [29]NASA / [30]GSFC
                           & [31]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2010/MareFrigorisMattSmith.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.instagram.com/insertastronamehere/
   5. http://volcano.oregonstate.edu/mare
   6. https://www.jpl.nasa.gov/spaceimages/details.php?id=PIA23209
   7. https://www.technology.org/2019/05/15/study-finds-new-wrinkles-on-earths-moon/
   8. https://apod.nasa.gov/apod/ap141204.html
   9. https://upload.wikimedia.org/wikipedia/commons/3/3f/Vallis_Alpes_5102_med.jpg
  10. https://shallowsky.com/moon/
  11. https://apod.nasa.gov/apod/ap201007.html
  12. https://apod.nasa.gov/apod/archivepix.html
  13. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  14. https://apod.nasa.gov/apod/lib/aptree.html
  15. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  16. https://apod.nasa.gov/apod/calendar/allyears.html
  17. https://apod.nasa.gov/apod.rss
  18. https://apod.nasa.gov/apod/lib/edlinks.html
  19. https://apod.nasa.gov/apod/lib/about_apod.html
  20. http://asterisk.apod.com/discuss_apod.php?date=201008
  21. https://apod.nasa.gov/apod/ap201009.html
  22. http://www.phy.mtu.edu/faculty/Nemiroff.html
  23. http://www.phy.mtu.edu/
  24. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  25. http://www.astro.umd.edu/
  26. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  27. https://www.nasa.gov/about/highlights/HP_Privacy.html
  28. https://astrophysics.gsfc.nasa.gov/
  29. https://www.nasa.gov/
  30. https://www.nasa.gov/centers/goddard/
  31. http://www.mtu.edu/