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.

                                 2022 May 29

         IFRAME: [2]https://www.youtube.com/embed/cNT5yAqpBmI?rel=0

                  Simulation TNG50: A Galaxy Cluster Forms
    Video Credit: [3]IllustrisTNG Project; Visualization: [4]Dylan Nelson
              ([5]Max Planck Institute for Astrophysics) et al.
     Music: [6]Symphony No. 5 ([7]Ludwig van Beethoven), via [8]YouTube
                                Audio Library

   Explanation: How do clusters of galaxies form? Since our universe moves
   too slowly to watch, faster-moving computer simulations are created to
   help find out. A recent effort is [9]TNG50 from [10]IllustrisTNG, an
   upgrade of the famous [11]Illustris Simulation. The first part of the
   [12]featured video tracks cosmic gas (mostly [13]hydrogen) as it
   evolves into [14]galaxies and [15]galaxy clusters from the early
   universe to today, with brighter colors marking faster moving gas. As
   the universe matures, gas falls into [16]gravitational wells, galaxies
   forms, galaxies spin, galaxies collide and merge, all while [17]black
   holes form in galaxy centers and expel surrounding gas at high speeds.
   The second half of [18]the video switches to tracking stars, showing a
   galaxy cluster coming together complete with [19]tidal tails and
   [20]stellar streams. The outflow from black holes in [21]TNG50 is
   [22]surprisingly complex and details are being compared with our
   [23]real universe. [24]Studying how gas coalesced in the [25]early
   universe helps humanity better understand how our [26]Earth, [27]Sun,
   and [28]Solar System originally formed.

                  Tomorrow's picture: unexpectedly red rays
     __________________________________________________________________

      [29]< | [30]Archive | [31]Submissions | [32]Index | [33]Search |
   [34]Calendar | [35]RSS | [36]Education | [37]About APOD | [38]Discuss |
                                    [39]>
     __________________________________________________________________

    Authors & editors: [40]Robert Nemiroff ([41]MTU) & [42]Jerry Bonnell
                                 ([43]UMCP)
          NASA Official: Phillip Newman [44]Specific rights apply.
              [45]NASA Web Privacy Policy and Important Notices
                A service of: [46]ASD at [47]NASA / [48]GSFC
                           & [49]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://www.youtube.com/embed/cNT5yAqpBmI?rel=0
   3. http://www.tng-project.org/people/
   4. https://www.ita.uni-heidelberg.de/~dnelson/
   5. https://www.mpa-garching.mpg.de/
   6. https://en.wikipedia.org/wiki/Symphony_No._5_(Beethoven)
   7. https://en.wikipedia.org/wiki/Ludwig_van_Beethoven
   8. https://www.youtube.com/audiolibrary/
   9. https://www.tng-project.org/about/
  10. https://www.tng-project.org/
  11. https://www.illustris-project.org/
  12. https://www.tng-project.org/media/
  13. https://periodic.lanl.gov/1.shtml
  14. https://apod.nasa.gov/apod/ap181009.html
  15. https://en.wikipedia.org/wiki/Galaxy_cluster
  16. https://en.wikipedia.org/wiki/Gravity_well
  17. https://apod.nasa.gov/apod/ap991017.html
  18. https://www.tng-project.org/media/
  19. https://apod.nasa.gov/apod/ap100926.html
  20. https://apod.nasa.gov/apod/ap140117.html
  21. https://arxiv.org/abs/1902.05553
  22. https://image.shutterstock.com/image-photo/funny-british-kitten-looks-surprise-260nw-1221814405.jpg
  23. https://apod.nasa.gov/apod/ap210802.html
  24. https://ui.adsabs.harvard.edu/abs/2019MNRAS.490.3234N/abstract
  25. https://jwst.nasa.gov/content/science/firstLight.html
  26. https://solarsystem.nasa.gov/planets/earth/in-depth/
  27. https://solarsystem.nasa.gov/solar-system/sun/in-depth/
  28. https://www.openspaceproject.com/solar-system-videos
  29. https://apod.nasa.gov/apod/ap220528.html
  30. https://apod.nasa.gov/apod/archivepix.html
  31. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  32. https://apod.nasa.gov/apod/lib/aptree.html
  33. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  34. https://apod.nasa.gov/apod/calendar/allyears.html
  35. https://apod.nasa.gov/apod.rss
  36. https://apod.nasa.gov/apod/lib/edlinks.html
  37. https://apod.nasa.gov/apod/lib/about_apod.html
  38. http://asterisk.apod.com/discuss_apod.php?date=220529
  39. https://apod.nasa.gov/apod/ap220530.html
  40. http://www.phy.mtu.edu/faculty/Nemiroff.html
  41. http://www.phy.mtu.edu/
  42. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  43. http://www.astro.umd.edu/
  44. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  45. https://www.nasa.gov/about/highlights/HP_Privacy.html
  46. https://astrophysics.gsfc.nasa.gov/
  47. https://www.nasa.gov/
  48. https://www.nasa.gov/centers/goddard/
  49. http://www.mtu.edu/