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 March 15
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                               Tololo Totality
     Image Credit & [3]Copyright: [4]Petr Horálek/CTIO ([5]Cerro Tololo
                     Observatory) /AURA/NSF/ [6]NOIRLab

   Explanation: [7]On March 14 the Moon was Full. In an appropriate
   celebration of Pi day, that put the Moon 3.14 radians (180 degrees) in
   ecliptic longitude from the Sun in planet Earth's sky. As a bonus for
   [8]fans of Pi and [9]the night sky, on that date the Moon also passed
   directly through Earth's umbral shadow in a [10]total lunar eclipse. In
   clear skies, the colors of an eclipsed Moon can be vivid. Reflecting
   the deeply reddened sunlight scattered into Earth's shadow, the
   darkened lunar disk was recorded in this time series composite image
   from Cerro Tololo Observatory, Chile. The lunar triptych captures the
   start, middle, and end of the total eclipse phase that lasted about an
   hour. A faint [11]bluish tint seen just along the brighter lunar limb
   at the shadow's edge is due to sunlight filtered through Earth's
   stratospheric ozone layer.

           Growing Gallery: [12]Total Lunar Eclipse of 2025 March
                   Tomorrow's picture: Venusian silhouette
     __________________________________________________________________

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     __________________________________________________________________

    Authors & editors: [24]Robert Nemiroff ([25]MTU) & [26]Jerry Bonnell
                                 ([27]UMCP)
          NASA Official: Amber Straughn [28]Specific rights apply.
              [29]NASA Web Privacy Policy and Important Notices
                A service of: [30]ASD at [31]NASA / [32]GSFC,
                         [33]NASA Science Activation
                           & [34]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2503/2025_03_14_ZM_Tololo_Totalita_Fin_1500py.png
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.petrhoralek.com/#about-1
   5. https://noirlab.edu/public/programs/ctio/
   6. https://noirlab.edu/public/
   7. https://apod.nasa.gov/apod/ap250314.html
   8. https://www.jpl.nasa.gov/edu/resources/project/18-ways-nasa-uses-pi/
   9. https://science.nasa.gov/skywatching/night-sky-network/
  10. https://science.nasa.gov/solar-system/moon/what-you-need-to-know-about-the-march-2025-total-lunar-eclipse/
  11. https://apod.nasa.gov/apod/ap151003.html
  12. https://www.facebook.com/media/set/?set=a.640142352047679&type=3
  13. https://apod.nasa.gov/apod/ap250314.html
  14. https://apod.nasa.gov/apod/archivepix.html
  15. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  16. https://apod.nasa.gov/apod/lib/aptree.html
  17. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  18. https://apod.nasa.gov/apod/calendar/allyears.html
  19. https://apod.nasa.gov/apod.rss
  20. https://apod.nasa.gov/apod/lib/edlinks.html
  21. https://apod.nasa.gov/apod/lib/about_apod.html
  22. http://asterisk.apod.com/discuss_apod.php?date=250315
  23. https://apod.nasa.gov/apod/ap250316.html
  24. http://www.phy.mtu.edu/faculty/Nemiroff.html
  25. http://www.phy.mtu.edu/
  26. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  27. http://www.astro.umd.edu/
  28. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  29. https://www.nasa.gov/about/highlights/HP_Privacy.html
  30. https://astrophysics.gsfc.nasa.gov/
  31. https://www.nasa.gov/
  32. https://www.nasa.gov/centers/goddard/
  33. https://science.nasa.gov/learners
  34. http://www.mtu.edu/