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.

                               2019 August 30
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                            NGC 7129 and NGC 7142
     Image Credit & [3]Copyright: [4]Steve Cannistra ([5]StarryWonders)

   Explanation: [6]This wide-field telescopic image looks toward the
   constellation [7]Cepheus and an intriguing visual pairing of dusty
   [8]reflection nebula NGC 7129 (right) and [9]open star cluster NGC
   7142. The two appear separated by only half a degree on the sky, but
   they actually lie at quite different distances. In the foreground,
   [10]dusty nebula NGC 7129 is about 3,000 light-years distant, while
   open cluster [11]NGC 7142 is likely over 6,000 light-years away. In
   fact, pervasive and clumpy foreground dust clouds in this region redden
   the light from NGC 7142, [12]complicating astronomical explorations of
   the cluster. Still, NGC 7142 is thought to be an [13]older open star
   cluster, while the bright stars embedded in NGC 7129 are perhaps a few
   million years young. The telltale reddish crescent shapes around NGC
   7129 are associated with [14]energetic jets streaming away from newborn
   stars.

                     Tomorrow's picture: Spitzer's Orion
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    Authors & editors: [26]Robert Nemiroff ([27]MTU) & [28]Jerry Bonnell
                                 ([29]UMCP)
          NASA Official: Phillip Newman [30]Specific rights apply.
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                A service of: [32]ASD at [33]NASA / [34]GSFC
                           & [35]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/1908/ngc7129largerCannistra.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. http://www.starrywonders.com/copyright.html
   5. http://www.starrywonders.com/
   6. http://www.starrywonders.com/ngc7129small.html
   7. http://www.hawastsoc.org/deepsky/cep/index.html
   8. https://apod.nasa.gov/apod/ap011228.html
   9. http://en.wikipedia.org/wiki/Open_cluster
  10. https://apod.nasa.gov/apod/ap160829.html
  11. http://www.univie.ac.at/webda/cgi-bin/ocl_page.cgi?dirname=ngc7142
  12. http://astronomy.swin.edu.au/cosmos/I/Interstellar+Reddening
  13. https://apod.nasa.gov/apod/ap070809.html
  14. http://hubblesite.org/newscenter/archive/releases/1995/24/image/a
  15. https://apod.nasa.gov/apod/ap190829.html
  16. https://apod.nasa.gov/apod/archivepix.html
  17. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  18. https://apod.nasa.gov/apod/lib/aptree.html
  19. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  20. https://apod.nasa.gov/apod/calendar/allyears.html
  21. https://apod.nasa.gov/apod.rss
  22. https://apod.nasa.gov/apod/lib/edlinks.html
  23. https://apod.nasa.gov/apod/lib/about_apod.html
  24. http://asterisk.apod.com/discuss_apod.php?date=190830
  25. https://apod.nasa.gov/apod/ap190831.html
  26. http://www.phy.mtu.edu/faculty/Nemiroff.html
  27. http://www.phy.mtu.edu/
  28. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  29. http://www.astro.umd.edu/
  30. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  31. https://www.nasa.gov/about/highlights/HP_Privacy.html
  32. https://astrophysics.gsfc.nasa.gov/
  33. https://www.nasa.gov/
  34. https://www.nasa.gov/centers/goddard/
  35. http://www.mtu.edu/