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.

                                 2021 July 9
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                   M82: Starburst Galaxy with a Superwind
        Image Credit & [3]Copyright: [4]Team ARO, [5]Alentejo Remote
                                 Observatory

   Explanation: [6]M82 is a starburst galaxy with a superwind. [7]In fact,
   through ensuing supernova explosions and powerful winds from massive
   stars, the burst of star formation in M82 is driving a prodigious
   outflow. [8]Evidence for the superwind from the galaxy's central
   regions is clear in sharp telescopic snapshot. The composite image
   highlights emission from long outflow filaments of atomic hydrogen gas
   in reddish hues. Some of the gas in the superwind, enriched in heavy
   elements [9]forged in the massive stars, will eventually escape into
   [10]intergalactic space. Triggered by a [11]close encounter with nearby
   large [12]galaxy M81, the furious burst of star formation in M82 should
   last about 100 million years or so. Also known as the Cigar Galaxy for
   its elongated visual appearance, M82 is about 30,000 light-years
   across. It lies 12 million light-years away near the northern boundary
   of [13]Ursa Major.

              Tomorrow's picture: Mercury and the Da Vinci Glow
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    Authors & editors: [25]Robert Nemiroff ([26]MTU) & [27]Jerry Bonnell
                                 ([28]UMCP)
          NASA Official: Phillip Newman [29]Specific rights apply.
              [30]NASA Web Privacy Policy and Important Notices
                A service of: [31]ASD at [32]NASA / [33]GSFC
                           & [34]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2107/LRVBPIX3M82Crop.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://astroaro.fr/en/contact-link
   5. https://astroaro.fr/en/home/
   6. http://www.messier.seds.org/m/m082.html
   7. https://astroaro.fr/en/en_m81-m82/
   8. http://chandra.harvard.edu/photo/2006/m82/
   9. https://apod.nasa.gov/apod/ap050813.html
  10. http://arxiv.org/abs/1303.1183
  11. https://apod.nasa.gov/apod/ap200515.html
  12. https://apod.nasa.gov/apod/ap130416.html
  13. http://en.wikipedia.org/wiki/Ursa_Major
  14. https://apod.nasa.gov/apod/ap210708.html
  15. https://apod.nasa.gov/apod/archivepix.html
  16. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  17. https://apod.nasa.gov/apod/lib/aptree.html
  18. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  19. https://apod.nasa.gov/apod/calendar/allyears.html
  20. https://apod.nasa.gov/apod.rss
  21. https://apod.nasa.gov/apod/lib/edlinks.html
  22. https://apod.nasa.gov/apod/lib/about_apod.html
  23. http://asterisk.apod.com/discuss_apod.php?date=210709
  24. https://apod.nasa.gov/apod/ap210710.html
  25. http://www.phy.mtu.edu/faculty/Nemiroff.html
  26. http://www.phy.mtu.edu/
  27. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  28. http://www.astro.umd.edu/
  29. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  30. https://www.nasa.gov/about/highlights/HP_Privacy.html
  31. https://astrophysics.gsfc.nasa.gov/
  32. https://www.nasa.gov/
  33. https://www.nasa.gov/centers/goddard/
  34. http://www.mtu.edu/