      APOD: 2018 March 5 - The Hubble Ultra Deep Field in Light and Sound

                         Astronomy Picture of the Day

    Discover the cosmos! [1] Each day a different image or photograph of our
 fascinating universe is featured, along with a brief explanation written by a
                           professional astronomer.

                                 2018 March 5
                The Hubble Ultra-Deep Field in Light and Sound
 Image Credit: NASA [2] , ESA [3] , Hubble [4] ; Sonification: G. Salvesen [5]
                  (UCSB [6] ); Data:  M. Rafelski et al. [7]

Explanation: Have you heard about the Hubble Ultra-Deep Field? Either way,
you've likely not heard about it like this [8]  -- please run your pointer
over the featured image and listen! The Hubble Ultra-Deep Field [9]  (HUDF)
was created in 2003-2004 with the Hubble Space Telescope [10]  staring for a
long time toward near-empty space so that distant, faint galaxies [11]  would
become visible. One of the most famous images in astronomy, the HUDF [12]  is
featured here in a vibrant way -- with sonified distances. Pointing to a
galaxy will play a note [13]  that indicates its approximate redshift. Because
redshift [14] s shift light toward the red end of the spectrum of light [15] ,
they are depicted here by a shift of tone toward the low end of the spectrum
of sound [16] . The further the galaxy, the greater its cosmological redshift
[17]  (even if it appears blue), and the lower the tone that will be played.
The average galaxy in the HUDF [18]  is about 10.6 billion light years [19]
away and sounds like an F# [20] . What's the most distant galaxy you can find?
This Astronomy Picture of the Day (APOD) is based on an entry [21]  of new
site called Astronomy Sound of the Month [22]  (AstroSoM).

              Note:  The sounds will only play on some browsers.
                   Tomorrow's picture: rainbow airglow [23]

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    Authors & editors: Robert Nemiroff [35] (MTU [36] ) & Jerry Bonnell [37]
                                  (UMCP [38] )
          NASA Official:  Phillip Newman Specific rights apply [39] .
              NASA Web Privacy Policy and Important Notices [40]
              A service of: ASD [41]  at NASA [42]  / GSFC [43]
                           & Michigan Tech. U. [44]
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Site notes:
  [1] archivepix.html
  [2] https://www.nasa.gov/
  [3] http://www.esa.int/
  [4] https://www.nasa.gov/mission_pages/hubble/main/index.html
  [5] http://web.physics.ucsb.edu/~greg/
  [6] http://www.physics.ucsb.edu/
  [7] http://adsabs.harvard.edu/abs/2015AJ....150...31R
  [8] https://i.pinimg.com/564x/33/63/f6/3363f6be8a0b534cd852395723dd6700.jpg
  [9] https://en.wikipedia.org/wiki/Hubble_Ultra-Deep_Field
  [10] https://www.nasa.gov/mission_pages/hubble/story/index.html
  [11] http://www.spacetelescope.org/science/deep_fields/
  [12] ap040309.html
  [13] https://en.wikipedia.org/wiki/Musical_note
  [14] https://www.youtube.com/watch?v=8U4O8XB14tg
  [15] https://science.nasa.gov/ems/01_intro
  [16] http://newt.phys.unsw.edu.au/jw/sound.spectrum.html
  [17] ap130408.html
  [18] ap130827.html
  [19] http://chandra.harvard.edu/photo/cosmic_distance.html
  [20] https://en.wikipedia.org/wiki/Piano_key_frequencies
  [21] http://astrosom.com/Jan2018.php
  [22] http://astrosom.com/index.php
  [23] ap180306.html
  [24] ap180304.html
  [25] archivepix.html
  [26] lib/apsubmit2015.html
  [27] lib/aptree.html
  [28] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [29] calendar/allyears.html
  [30] /apod.rss
  [31] lib/edlinks.html
  [32] lib/about_apod.html
  [33] http://asterisk.apod.com/discuss_apod.php?date=180305
  [34] ap180306.html
  [35] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [36] http://www.phy.mtu.edu/
  [37] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [38] http://www.astro.umd.edu/
  [39] lib/about_apod.html#srapply
  [40] https://www.nasa.gov/about/highlights/HP_Privacy.html
  [41] https://astrophysics.gsfc.nasa.gov/
  [42] https://www.nasa.gov/
  [43] https://www.nasa.gov/centers/goddard/
  [44] http://www.mtu.edu/
