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.

                               2022 December 5
      [2]The featured image shows many blue stars clustered together in
   blue-glowing gas and dust. Please see the explanation for more detailed
                                information.

                  Pleiades: The Seven Sisters Star Cluster
     Image Credit & Copyright: [3]Blake Estes (iTelescope Siding Spring
                         Obs.) & [4]Christian Sasse

   Explanation: Have you ever seen the Pleiades star cluster? Even if you
   have, you probably have never seen it as large and clear as this.
   Perhaps the most famous star cluster on the sky, the bright stars of
   the [5]Pleiades can be seen with the unaided eye even from the depths
   of a [6]light-polluted city. With a long exposure from a dark location,
   though, the dust cloud surrounding the [7]Pleiades star [8]cluster
   becomes very evident. The [9]featured 11-hour exposure, taken from the
   [10]Siding Spring Observatory in [11]Australia, covers a sky area
   several times the size of the full [12]moon. Also known as the
   [13]Seven Sisters and [14]M45, [15]the Pleiades lies about 400
   [16]light years away toward the constellation of the Bull ([17]Taurus).
   A [18]common legend with a [19]modern twist is that one of the brighter
   stars faded since the cluster was named, leaving only [20]six of the
   sister stars visible to the unaided eye. The actual number of
   [21]Pleiades stars visible, however, may be more or less than seven,
   depending on the [22]darkness of the surrounding sky and the
   [23]clarity of the observer's eyesight.

   Your Sky Surprise: [24]What picture did APOD feature on your birthday?
                                 (post 1995)
                   Tomorrow's picture: star birth mountain
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    Authors & editors: [36]Robert Nemiroff ([37]MTU) & [38]Jerry Bonnell
                                 ([39]UMCP)
          NASA Official: Phillip Newman [40]Specific rights apply.
              [41]NASA Web Privacy Policy and Important Notices
                A service of: [42]ASD at [43]NASA / [44]GSFC,
                         [45]NASA Science Activation
                           & [46]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2212/Pleiades_Estes_3000.jpg
   3. https://www.instagram.com/thescopesmith/
   4. https://www.instagram.com/sassephoto/
   5. https://en.wikipedia.org/wiki/Pleiades
   6. https://apod.nasa.gov/apod/ap200408.html
   7. https://apod.nasa.gov/apod/ap091205.html
   8. http://asterisk.apod.com/viewtopic.php?f=24&t=18009
   9. https://www.instagram.com/p/ClNSJOgpxAR/
  10. https://youtu.be/d0bzO0ZnhdU
  11. https://en.wikipedia.org/wiki/Australia
  12. https://solarsystem.nasa.gov/moons/earths-moon/overview/
  13. http://www.naic.edu/~gibson/pleiades/pleiades_myth.html
  14. https://apod.nasa.gov/apod/ap131122.html
  15. https://www.skyandtelescope.com/astronomy-news/observing-news/many-pleiades-can-see10222014/
  16. https://spaceplace.nasa.gov/light-year/en/
  17. https://en.wikipedia.org/wiki/Taurus_%28constellation%29
  18. http://arxiv.org/ftp/arxiv/papers/0810/0810.1592.pdf
  19. http://kencroswell.com/GD50.html
  20. https://i.pinimg.com/originals/a9/b3/21/a9b321789591e2839c773669a5aa03bd.jpg
  21. http://www.youtube.com/watch?v=p6prI0Zfw80
  22. https://apod.nasa.gov/apod/ap010827.html
  23. http://en.wikipedia.org/wiki/File:Snellen_chart.svg
  24. https://apod.nasa.gov/apod/calendar/allyears.html
  25. https://apod.nasa.gov/apod/ap221204.html
  26. https://apod.nasa.gov/apod/archivepix.html
  27. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  28. https://apod.nasa.gov/apod/lib/aptree.html
  29. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  30. https://apod.nasa.gov/apod/calendar/allyears.html
  31. https://apod.nasa.gov/apod.rss
  32. https://apod.nasa.gov/apod/lib/edlinks.html
  33. https://apod.nasa.gov/apod/lib/about_apod.html
  34. http://asterisk.apod.com/discuss_apod.php?date=221205
  35. https://apod.nasa.gov/apod/ap221206.html
  36. http://www.phy.mtu.edu/faculty/Nemiroff.html
  37. http://www.phy.mtu.edu/
  38. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  39. http://www.astro.umd.edu/
  40. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  41. https://www.nasa.gov/about/highlights/HP_Privacy.html
  42. https://astrophysics.gsfc.nasa.gov/
  43. https://www.nasa.gov/
  44. https://www.nasa.gov/centers/goddard/
  45. https://science.nasa.gov/learners
  46. http://www.mtu.edu/