            APOD: 2017 July 17 - Moon Shadow versus Sun Reflection

                         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.

                                 2017 July 17
                      Moon Shadow versus Sun Reflection
        Image Credit: Himawari [2] -8, NASA [3] 's SVS [4] (GSFC [5] )

Explanation: What are those lights and shadows crossing the Earth? As the
featured [6]  five-second time-lapse video [7] progresses, a full day on
planet Earth is depicted as seen from Japan [8] 's Himawari-8 satellite [9]
in geostationary orbit [10]  high above the Pacific Ocean [11] . The Sun rises
to the right and sets to the left, illuminating the half of Earth [12]  that
is most directly below. A reflected image of the Sun -- a Sun glint [13]  --
is visible as a bright spot that moves from right to left. More unusual,
though, is the dark spot [14]  that moves from the lower left to upper right
That is the shadow of the Moon [15] , and it can only appear when the Moon
goes directly between [16]  the Earth and the Sun. Last year, on the day these
images were taken, the most deeply shadowed region experienced [17]  a total
eclipse [18]  of the Sun. Next month [19] a similarly dark shadow will sweep
right across [20]  the USA [21] .

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                                    [25]
                  Tomorrow's picture: thunder moon pisa [26]

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    Authors & editors: Robert Nemiroff [38] (MTU [39] ) & Jerry Bonnell [40]
                                  (UMCP [41] )
          NASA Official:  Phillip Newman Specific rights apply [42] .
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              A service of: ASD [44]  at NASA [45]  / GSFC [46]
                           & Michigan Tech. U. [47]
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Site notes:
  [1] archivepix.html
  [2] http://www.jma-net.go.jp/msc/en/index.html
  [3] https://www.nasa.gov/
  [4] https://svs.gsfc.nasa.gov/
  [5] https://www.nasa.gov/goddard
  [6] https://svs.gsfc.nasa.gov/30758
  [7] https://www.youtube.com/watch?v=9Vp2jUQ4rNM
  [8] https://en.wikipedia.org/wiki/Japan
  [9] https://himawari8.nict.go.jp/
  [10] https://earthobservatory.nasa.gov/Features/OrbitsCatalog/page2.php
  [11] https://en.wikipedia.org/wiki/Pacific_Ocean
  [12] ap140922.html
  [13] ap980608.html
  [14] ap110102.html
  [15] https://www.youtube.com/watch?v=kGNxKnLmOH4
  [16] https://eclipse2017.nasa.gov/sites/default/files/eclipsesHOW.png
  [17] https://www.youtube.com/watch?v=3rSrHqmtR2Q
  [18] ap160315.html
  [19] https://eclipse2017.nasa.gov/
  [20] https://eclipse2017.nasa.gov/eclipse-who-what-where-when-and-how
  [21] ap170131.html
  [22] https://www.facebook.com/AstronomyPictureOfTheDay
  [23] https://plus.google.com/u/1/+AstronomyPictureOfTheDay
  [24] https://www.instagram.com/astronomypicturesdaily/
  [25] http://twitter.com/apod/
  [26] ap170718.html
  [27] ap170716.html
  [28] archivepix.html
  [29] lib/apsubmit2015.html
  [30] lib/aptree.html
  [31] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [32] calendar/allyears.html
  [33] /apod.rss
  [34] lib/edlinks.html
  [35] lib/about_apod.html
  [36] http://asterisk.apod.com/discuss_apod.php?date=170717
  [37] ap170718.html
  [38] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [39] http://www.phy.mtu.edu/
  [40] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [41] http://www.astro.umd.edu/
  [42] lib/about_apod.html#srapply
  [43] https://www.nasa.gov/about/highlights/HP_Privacy.html
  [44] https://astrophysics.gsfc.nasa.gov/
  [45] https://www.nasa.gov/
  [46] https://www.nasa.gov/centers/goddard/
  [47] http://www.mtu.edu/
