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 __________________________________________________________________ [25]< | [26]Archive | [27]Submissions | [28]Index | [29]Search | [30]Calendar | [31]RSS | [32]Education | [33]About APOD | [34]Discuss | [35]> __________________________________________________________________ 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/