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.

                              2024 February 26

           IFRAME: [2]https://youtube.com/embed/hwQTH0IGrwE?rel=0

                     Martian Moon Eclipses Martian Moon
   Video Credit: [3]ESA, [4]DLR, [5]FU Berlin, [6]Mars Express; Processing
                   & [7]CC BY 2.0 License: [8]Andrea Luck

   Explanation: What if there were two moons in the sky -- and they
   eclipsed each other? This happens on [9]Mars. The [10]featured video
   shows a version of this unusual eclipse from space. Pictured are the
   two moons of Mars: the larger [11]Phobos, which orbits closer to the
   red planet, and the smaller [12]Deimos, which orbits further out.
   [13]The sequence was captured last year by the [14]ESA’s [15]Mars
   Express, a robotic spacecraft that itself orbits [16]Mars. A similar
   [17]eclipse is visible from the Martian surface, although very rarely.
   From the surface, though, the closer moon [18]Phobos would appear to
   pass in front of farther moon Deimos. [19]Most oddly, both moons orbit
   Mars so close that they appear to [20]move backwards when compared to
   [21]Earth's Moon from Earth, both rising in west and setting in the
   east. [22]Phobos, the closer moon, orbits so close and so fast that it
   passes nearly overhead about three times a day.

                     Tomorrow's picture: spaghetti star
     __________________________________________________________________

      [23]< | [24]Archive | [25]Submissions | [26]Index | [27]Search |
   [28]Calendar | [29]RSS | [30]Education | [31]About APOD | [32]Discuss |
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     __________________________________________________________________

    Authors & editors: [34]Robert Nemiroff ([35]MTU) & [36]Jerry Bonnell
                                 ([37]UMCP)
          NASA Official: Amber Straughn; [38]Specific rights apply.
              [39]NASA Web Privacy Policy and Important Notices
                A service of: [40]ASD at [41]NASA / [42]GSFC,
                         [43]NASA Science Activation
                           & [44]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://youtube.com/embed/hwQTH0IGrwE?rel=0
   3. https://www.esa.int/
   4. https://www.dlr.de/EN/organisation-dlr/dlr/dlr-at-a-glance.html
   5. https://www.fu-berlin.de/
   6. https://www.esa.int/Science_Exploration/Space_Science/Mars_Express
   7. https://creativecommons.org/licenses/by/2.0/
   8. https://twitter.com/andrluck
   9. https://science.nasa.gov/mars/
  10. https://www.flickr.com/photos/192271236@N03/53339474142/in/photostream/
  11. https://apod.nasa.gov/apod/ap230731.html
  12. https://apod.nasa.gov/apod/ap010902.html
  13. https://www.flickr.com/photos/192271236@N03/53339522052/
  14. https://www.esa.int/
  15. https://www.esa.int/Science_Exploration/Space_Science/Mars_Express
  16. https://en.wikipedia.org/wiki/Mars
  17. https://apod.nasa.gov/apod/ap220509.html
  18. https://en.wikipedia.org/wiki/Phobos_(moon)#/media/File:Phobos_fly-by_animation_ESA223006.gif
  19. https://i2-prod.mirror.co.uk/incoming/article27598932.ece/ALTERNATES/s1200b/1_SWNS_SURPRISED_DOG_008.jpg
  20. https://en.wikipedia.org/wiki/Moonrise_and_moonset#Direction
  21. https://apod.nasa.gov/apod/ap220421.html
  22. https://apod.nasa.gov/apod/ap220703.html
  23. https://apod.nasa.gov/apod/ap240225.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.com/feed.rss
  30. https://apod.nasa.gov/apod/lib/edlinks.html
  31. https://apod.nasa.gov/apod/lib/about_apod.html
  32. https://asterisk.apod.com/discuss_apod.php?date=240226
  33. https://apod.nasa.gov/apod/ap240227.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. https://science.nasa.gov/learners
  44. http://www.mtu.edu/