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 May 31

         IFRAME: [2]https://www.youtube.com/embed/X4UF9Akman0?rel=0

                       Simulation: A Disk Galaxy Forms
   Video Credit: [3]TNG Collaboration, [4]MPCDF, [5]FAS Harvard U.; Music:
               World's Sunrise ([6]YouTube: Jimena Contreras)

   Explanation: How did we get here? We know that we live on a [7]planet
   orbiting a [8]star orbiting a [9]galaxy, but how did all of this form?
   Since our universe [10]moves too slowly to watch, faster-moving
   computer simulations are [11]created to help find out. Specifically,
   [12]this featured video from the [13]Illustris[14]TNG collaboration
   tracks gas from the early universe ([15]redshift 12) until today
   ([16]redshift 0). As the [17]simulation begins, ambient gas falls into
   and accumulates in a region of relatively high [18]gravity. After a few
   billion years, a well-defined center materializes from a strange and
   fascinating [19]cosmic dance. Gas blobs -- some representing [20]small
   satellite galaxies -- continue to fall into and become absorbed by the
   rotating galaxy as the present epoch is reached and the video ends. For
   the [21]Milky Way Galaxy, however, big mergers may not be over --
   recent evidence indicates that our large spiral disk Galaxy [22]will
   collide and coalesce with the slightly larger [23]Andromeda spiral disk
   galaxy in the next few billion years.

    Open Science: [24]Browse 3,000+ codes in the Astrophysics Source Code
                                   Library
                    Tomorrow's picture: recycling a star
     __________________________________________________________________

      [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://www.youtube.com/embed/X4UF9Akman0?rel=0
   3. https://www.tng-project.org/about/
   4. https://www.mpcdf.mpg.de/
   5. https://www.rc.fas.harvard.edu/
   6. https://www.youtube.com/watch?v=7BBnB-j6U-c
   7. https://apod.nasa.gov/apod/ap220206.html
   8. https://solarsystem.nasa.gov/solar-system/sun/overview/
   9. https://apod.nasa.gov/apod/ap080606.html
  10. https://cdn.shopify.com/s/files/1/0272/4770/6214/articles/do-cats-get-bored-800x533.jpg
  11. https://m.media-amazon.com/images/I/51ZjBEW+qNL.jpg
  12. https://www.tng-project.org/media/
  13. http://www.illustris-project.org/
  14. http://www.tng-project.org/
  15. https://apod.nasa.gov/apod/ap130408.html
  16. https://en.wikipedia.org/wiki/Redshift
  17. https://www.tng-project.org/media/
  18. https://spaceplace.nasa.gov/what-is-gravity/en/
  19. https://apod.nasa.gov/cgi-bin/apod/apod_search?tquery=colliding+galaxy
  20. http://www.atlasoftheuniverse.com/sattelit.html
  21. http://cass.ucsd.edu/archive/public/tutorial/MW.html
  22. https://apod.nasa.gov/apod/ap120604.html
  23. https://apod.nasa.gov/apod/ap181217.html
  24. https://ascl.net/code/all
  25. https://apod.nasa.gov/apod/ap230530.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. https://asterisk.apod.com/discuss_apod.php?date=230531
  35. https://apod.nasa.gov/apod/ap230601.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/