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.

                              2020 February 23

         IFRAME: [2]https://www.youtube.com/embed/QSivvdIyeG4?rel=0

                    Illustris Simulation of the Universe
   Video Credit: [3]Illustris Collaboration, [4]NASA, [5]PRACE, [6]XSEDE,
                           [7]MIT, [8]Harvard CfA;
          Music: The Poisoned Princess ([9]Media Right Productions)

   Explanation: How did we get here? [10]Click play, sit back, and watch.
   A [11]computer simulation of the evolution of the universe provides
   insight into how [12]galaxies formed and perspectives into
   [13]humanity's place in the universe. The [14]Illustris project
   [15]exhausted 20 million CPU hours in 2014 following 12 billion
   resolution elements spanning a cube 35 million [16]light years on a
   side as it evolved over 13 billion years. [17]The simulation tracks
   matter into the [18]formation of a wide variety of galaxy types. As the
   [19]virtual universe evolves, some of the matter expanding with the
   [20]universe soon gravitationally condenses to form filaments,
   [21]galaxies, and [22]clusters of galaxies. The [23]featured video
   takes the perspective of a virtual camera circling part of this
   changing universe, first showing the evolution of [24]dark matter, then
   [25]hydrogen gas coded by temperature ([26]0:45), then heavy elements
   such as [27]helium and [28]carbon ([29]1:30), and then back to [30]dark
   matter ([31]2:07). On the lower left the time since the [32]Big Bang is
   listed, while on the lower right the type of matter being shown is
   listed. Explosions (0:50) [33]depict galaxy-center supermassive black
   holes expelling bubbles of hot gas. Interesting discrepancies between
   [34]Illustris and the [35]real universe have been studied, including
   why [36]the simulation produced an overabundance of old stars.

                      Tomorrow's picture: lunar portal
     __________________________________________________________________

      [37]< | [38]Archive | [39]Submissions | [40]Index | [41]Search |
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    Authors & editors: [48]Robert Nemiroff ([49]MTU) & [50]Jerry Bonnell
                                 ([51]UMCP)
          NASA Official: Phillip Newman [52]Specific rights apply.
              [53]NASA Web Privacy Policy and Important Notices
                A service of: [54]ASD at [55]NASA / [56]GSFC
                           & [57]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://www.youtube.com/embed/QSivvdIyeG4?rel=0
   3. https://www.illustris-project.org/people/
   4. https://www.nasa.gov/
   5. http://www.prace-ri.eu/
   6. https://www.xsede.org/
   7. http://web.mit.edu/physics/people/faculty/vogelsberger_mark.html
   8. https://www.cfa.harvard.edu/
   9. https://www.mediarightproductions.com/
  10. https://www.youtube.com/watch?v=QSivvdIyeG4
  11. https://www.illustris-project.org/media/
  12. https://en.wikipedia.org/wiki/Galaxy_formation
  13. https://apod.nasa.gov/apod/ap010101.html
  14. https://www.youtube.com/watch?v=NjSFR40SY58
  15. https://i.pinimg.com/474x/0c/ba/94/0cba94c29324b1108fd7b5831742961c.jpg
  16. https://chandra.harvard.edu/photo/cosmic_distance.html
  17. https://ui.adsabs.harvard.edu/abs/2014Natur.509..177V/abstract
  18. https://apod.nasa.gov/apod/ap120717.html
  19. http://www.sen.com/news/computer-creates-the-virtual-universe-with-unprecedented-resolution
  20. https://apod.nasa.gov/apod/ap121014.html
  21. https://apod.nasa.gov/apod/ap130808.html
  22. https://apod.nasa.gov/apod/ap100502.html
  23. https://www.youtube.com/watch?v=A23Ro3kiB1E
  24. http://chandra.harvard.edu/xray_astro/dark_matter/
  25. http://periodic.lanl.gov/1.shtml
  26. https://www.youtube.com/watch?v=QSivvdIyeG4&t=0m45s
  27. http://periodic.lanl.gov/2.shtml
  28. http://periodic.lanl.gov/6.shtml
  29. https://www.youtube.com/watch?v=QSivvdIyeG4&t=1m30s
  30. http://en.wikipedia.org/wiki/Dark_matter
  31. https://www.youtube.com/watch?v=QSivvdIyeG4&t=2m07s
  32. https://en.wikipedia.org/wiki/Big_Bang
  33. https://www.cfa.harvard.edu/imagelist/2014-10
  34. http://www.illustris-project.org/
  35. https://apod.nasa.gov/apod/ap120813.html
  36. http://arxiv.org/abs/1405.1418
  37. https://apod.nasa.gov/apod/ap200222.html
  38. https://apod.nasa.gov/apod/archivepix.html
  39. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  40. https://apod.nasa.gov/apod/lib/aptree.html
  41. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  42. https://apod.nasa.gov/apod/calendar/allyears.html
  43. https://apod.nasa.gov/apod.rss
  44. https://apod.nasa.gov/apod/lib/edlinks.html
  45. https://apod.nasa.gov/apod/lib/about_apod.html
  46. http://asterisk.apod.com/discuss_apod.php?date=200223
  47. https://apod.nasa.gov/apod/ap200224.html
  48. http://www.phy.mtu.edu/faculty/Nemiroff.html
  49. http://www.phy.mtu.edu/
  50. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  51. http://www.astro.umd.edu/
  52. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  53. https://www.nasa.gov/about/highlights/HP_Privacy.html
  54. https://astrophysics.gsfc.nasa.gov/
  55. https://www.nasa.gov/
  56. https://www.nasa.gov/centers/goddard/
  57. http://www.mtu.edu/