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 October 9
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                 NGC 7714: Starburst after Galaxy Collision
          Image Credit: [3]NASA, [4]ESA, [5]Hubble Legacy Archive;
                    Processing & Copyright: [6]Rudy Pohl

   Explanation: Is this galaxy jumping through a [7]giant ring of stars?
   Probably not. Although the precise [8]dynamics behind the featured
   image is yet unclear, what is clear is that the pictured galaxy, [9]NGC
   7714, has been stretched and distorted by a recent collision with a
   neighboring galaxy. This smaller neighbor, [10]NGC 7715, situated off
   to the left of the featured frame, is thought to have charged right
   through [11]NGC 7714. Observations indicate that the golden [12]ring
   pictured is composed of millions of older Sun-like stars that are
   likely co-moving with the interior bluer stars. In contrast, the bright
   center of [13]NGC 7714 appears to be undergoing a burst of new star
   formation. The [14]featured image was captured by the [15]Hubble Space
   Telescope. NGC 7714 is located about 130 million [16]light years away
   toward the constellation of the Two Fish ([17]Pisces). The
   [18]interactions between these galaxies likely started about 150
   million [19]years ago and should continue for several hundred million
   [20]years more, after which a [21]single central galaxy may result.

                     Tomorrow's picture: the window seat
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    Authors & editors: [33]Robert Nemiroff ([34]MTU) & [35]Jerry Bonnell
                                 ([36]UMCP)
          NASA Official: Phillip Newman [37]Specific rights apply.
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                A service of: [39]ASD at [40]NASA / [41]GSFC
                           & [42]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/1910/Ngc7714_HubblePohl_2048.jpg
   3. https://www.nasa.gov/
   4. https://www.esa.int/About_Us/Welcome_to_ESA
   5. https://hla.stsci.edu/
   6. https://www.astrobin.com/users/Rudy_Pohl/
   7. https://apod.nasa.gov/apod/ap150419.html
   8. https://ui.adsabs.harvard.edu/abs/2003ApJ...589..157S/abstract
   9. https://www.youtube.com/watch?v=zMIBcXo-oXo
  10. http://faculty.etsu.edu/smithbj/captions/n7714cap.html
  11. https://www.spacetelescope.org/news/heic1503/
  12. https://www.flickr.com/photos/rudypohl/32588157757/in/photostream/
  13. https://en.wikipedia.org/wiki/NGC_7714
  14. https://www.astrobin.com/399094/J/?nc=user
  15. https://www.nasa.gov/mission_pages/hubble/story/index.html
  16. https://www.grc.nasa.gov/www/k-12/Numbers/Math/Mathematical_Thinking/how_long_is_a_light_year.htm
  17. https://en.wikipedia.org/wiki/Pisces_(constellation)
  18. https://apod.nasa.gov/apod/ap150212.html
  19. http://en.wikipedia.org/wiki/Timeline_of_natural_history
  20. http://en.wikipedia.org/wiki/Timeline_of_the_far_future
  21. https://apod.nasa.gov/apod/ap120604.html
  22. https://apod.nasa.gov/apod/ap191008.html
  23. https://apod.nasa.gov/apod/archivepix.html
  24. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  25. https://apod.nasa.gov/apod/lib/aptree.html
  26. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  27. https://apod.nasa.gov/apod/calendar/allyears.html
  28. https://apod.nasa.gov/apod.rss
  29. https://apod.nasa.gov/apod/lib/edlinks.html
  30. https://apod.nasa.gov/apod/lib/about_apod.html
  31. http://asterisk.apod.com/discuss_apod.php?date=191009
  32. https://apod.nasa.gov/apod/ap191010.html
  33. http://www.phy.mtu.edu/faculty/Nemiroff.html
  34. http://www.phy.mtu.edu/
  35. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  36. http://www.astro.umd.edu/
  37. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  38. https://www.nasa.gov/about/highlights/HP_Privacy.html
  39. https://astrophysics.gsfc.nasa.gov/
  40. https://www.nasa.gov/
  41. https://www.nasa.gov/centers/goddard/
  42. http://www.mtu.edu/