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.

                                2025 April 3
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                              The Da Vinci Glow
                Image Credit & [3]Copyright: [4]Giorgia Hofer

   Explanation: [5]A 26 hour old Moon poses behind the craggy outline of
   the Italian Dolomites in this twilight mountain and skyscape. The one
   second long exposure was captured near moonset on March 30. And while
   only a [6]a sliver of its sunlit surface is visible, most of the Moon's
   disk can be seen by [7]earthshine as light reflected from a bright
   planet Earth illuminates the lunar nearside. Also known as the Moon's
   ashen glow, a description of earthshine in terms of sunlight reflected
   by Earth's oceans illuminating the Moon's dark surface was written over
   500 years ago by [8]Leonardo da Vinci. Of course earthshine is just the
   most familiar example of [9]planetshine, the faint illumination of the
   dark portion of a moon by light reflected [10]from its planet.

                     Tomorrow's picture: pixels in space
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    Authors & editors: [22]Robert Nemiroff ([23]MTU) & [24]Jerry Bonnell
                                 ([25]UMCP)
          NASA Official: Amber Straughn [26]Specific rights apply.
              [27]NASA Web Privacy Policy and Important Notices
                A service of: [28]ASD at [29]NASA / [30]GSFC,
                         [31]NASA Science Activation
                           & [32]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2504/GHR5997Luna1giornofirmapicc.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.giorgiahoferphotography.com/
   5. https://svs.gsfc.nasa.gov/5415/
   6. https://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=ISS028&roll=E&frame=20073
   7. https://en.wikipedia.org/wiki/Earthlight_(astronomy)
   8. https://www.mos.org/leonardo/
   9. https://en.wikipedia.org/wiki/Planetshine
  10. https://apod.nasa.gov/apod/ap210730.html
  11. https://apod.nasa.gov/apod/ap250402.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=250403
  21. https://apod.nasa.gov/apod/ap250404.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. https://science.nasa.gov/learners
  32. http://www.mtu.edu/