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.

                               2023 August 16
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                          Arp 93: A Cosmic Embrace
    Image Credit & [3]Copyright: [4]Mike Selby, [5]Observatorio El Sauce

   Explanation: [6]Locked in a cosmic embrace, two large galaxies are
   merging at the center of this sharp telescopic field of view. The
   interacting system cataloged [7]as Arp 93 is some 200 million
   light-years distant toward the constellation Aquarius in planet Earth's
   sky. Individually the galaxies are identified as NGC 7285 (right) and
   NGC 7284. Their bright cores are still separated by about 20,000
   light-years or so, but a massive [8]tidal stream, a result of their
   ongoing gravitational interaction, extends over 200,000 light-years
   toward the bottom of the frame. Interacting galaxies do look
   [9]peculiar, but are now understood to be common in the Universe. In
   fact, closer to home, the large spiral Andromeda Galaxy is known to be
   approaching the Milky Way. Arp 93 may well present an analog of their
   distant [10]future cosmic embrace.

                      Tomorrow's picture: a cosmic zoo
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    Authors & editors: [22]Robert Nemiroff ([23]MTU) & [24]Jerry Bonnell
                                 ([25]UMCP)
          NASA Official: Phillip Newman [26]Specific rights apply.
              [27]NASA Web Privacy Policy and Important Notices
                A service of: [28]ASD at [29]NASA / [30]GSFC
                         [31]NASA Science Activation
                           & [32]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2308/NGC-7284-7285-LRGB-crop-CDK-1000-7-August-2023.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.facebook.com/masterdarksastro/
   5. https://obstech.cl/
   6. https://throughlightandtime.com/ngc-7284-7285-lrgb-crop-cdk-1000-7-august-2023/
   7. https://iopscience.iop.org/article/10.3847/2515-5172/ac9d3e
   8. https://apod.nasa.gov/apod/ap150201.html
   9. http://nedwww.ipac.caltech.edu/level5/Arp/frames.html
  10. https://science.nasa.gov/science-news/science-at-nasa/2012/31may_andromeda/
  11. https://apod.nasa.gov/apod/ap230815.html
  12. https://apod.nasa.gov/apod/archivepix.html
  13. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  14. https://apod.nasa.gov/apod/lib/aptree.html
  15. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  16. https://apod.nasa.gov/apod/calendar/allyears.html
  17. https://apod.nasa.gov/apod.rss
  18. https://apod.nasa.gov/apod/lib/edlinks.html
  19. https://apod.nasa.gov/apod/lib/about_apod.html
  20. http://asterisk.apod.com/discuss_apod.php?date=230816
  21. https://apod.nasa.gov/apod/ap230817.html
  22. http://www.phy.mtu.edu/faculty/Nemiroff.html
  23. http://www.phy.mtu.edu/
  24. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  25. http://www.astro.umd.edu/
  26. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  27. https://www.nasa.gov/about/highlights/HP_Privacy.html
  28. https://astrophysics.gsfc.nasa.gov/
  29. https://www.nasa.gov/
  30. https://www.nasa.gov/centers/goddard/
  31. https://science.nasa.gov/learners
  32. http://www.mtu.edu/