Astronomy Picture of the Day

                         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.

                                2019 March 10
                                      [2]
                     Moonrise Through Mauna Kea's Shadow
      Images Credit & Copyright: Michael Connelley [3] (U. Hawaii [4] )

Explanation: How can the Moon rise through a mountain? It cannot -- what was
photographed here [5]  is a moonrise [6]  through the shadow [7]  of a large
volcano [8] . The volcano is Mauna Kea [9] , Hawai'i [10] , USA [11] , a
frequent spot for spectacular [12] photographs [13] since [14] it [15] is [16]
one of [17] the [18] premier [19] observing [20] locations [21] on [22] planet
[23] Earth [24] . The Sun has just set in the opposite direction [25] , behind
the camera. Additionally, the Moon [26]  has just passed full phase [27]  --
were it precisely at full [28]  phase it would rise, possibly eclipsed [29] ,
at the very peak of the shadow. The Moon is actually rising in the triangular
[30] shadow cone [31]  of the volcano, a corridor of darkness [32] that tapers
off in the distance like converging [33]  train tracks. The Moon is too large
and too far away to be affected by the shadow [34]  of the volcano. Refraction
[35] of moonlight through the Earth's atmosphere [36]  makes the Moon [37]
appear slightly oval. Cinder cone [38] s from old volcanic eruptions are
visible in the foreground.

                      Tomorrow's picture: galactic magnet

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    Authors & editors: Robert Nemiroff [50] (MTU [51] ) & Jerry Bonnell [52]
                                  (UMCP [53] )
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                           & Michigan Tech. U. [59]
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Site notes:
  [1] archivepix.html
  [2] image/1903/moonrisemk_connelley_1600.jpg
  [3] mailto: msc at IfA.Hawaii.Edu
  [4]  http://www.ifa.hawaii.edu/
  [5] http://www.ifa.hawaii.edu/~msc/moonrise.jpg
  [6] ap171203.html
  [7] ap031127.html
  [8] http://en.wikipedia.org/wiki/Volcano
  [9] http://en.wikipedia.org/wiki/Mauna_Kea
  [10] http://www.state.hi.us/
  [11] https://www.cia.gov/library/publications/the-...
  [12] ap031201.html
  [13] ap030524.html
  [14] ap030909.html
  [15] ap011231.html
  [16] ap031123.html
  [17] ap031007.html
  [18] ap051220.html
  [19] ap010603.html
  [20] ap031125.html
  [21] ap001101.html
  [22] ap000905.html
  [23] ap090219.html
  [24] http://antwrp.gsfc.nasa.gov/apod/image/0011/e...
  [25] ap101128.html
  [26] https://solarsystem.nasa.gov/moons/earths-moo...
  [27] ap030810.html
  [28] ap990419.html
  [29] ap001013.html
  [30] ap110705.html
  [31] ap030106.html
  [32] http://www.atoptics.co.uk/atoptics/mtshad.htm
  [33] http://www.thenakedscientists.com/HTML/questi...
  [34]
https://worldwideinterweb.com/wp-content/uplo...
  [35] https://www.youtube.com/watch?v=Aggi0g67uXM
  [36] https://espo.nasa.gov/sites/default/files/ima...
  [37] ap180912.html
  [38] https://volcanoes.usgs.gov/vsc/glossary/cinde...
  [39] ap190309.html
  [40] archivepix.html
  [41] lib/apsubmit2015.html
  [42] lib/aptree.html
  [43] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apo...
  [44] calendar/allyears.html
  [45] /apod.rss
  [46] lib/edlinks.html
  [47] lib/about_apod.html
  [48] http://asterisk.apod.com/discuss_apod.php?dat...
  [49] ap190311.html
  [50] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [51] http://www.phy.mtu.edu/
  [52] https://antwrp.gsfc.nasa.gov/htmltest/jbonnel...
  [53] http://www.astro.umd.edu/
  [54] lib/about_apod.html#srapply
  [55] https://www.nasa.gov/about/highlights/HP_Priv...
  [56] https://astrophysics.gsfc.nasa.gov/
  [57] https://www.nasa.gov/
  [58] https://www.nasa.gov/centers/goddard/
  [59] http://www.mtu.edu/

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