[Maryschild]

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NASA Weekly Digest Bulletin

From: NASA News Service .... Sun, June 16, 2013 At 10:AM
TO: ________________
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The Moon and Sun
06/13/2013
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06/13/2013 12:00 AM EDT

The Moon and Sun:

Two or three times a year, NASA’s Solar Dynamics Observatory observes the moon
traveling across the sun,blocking its view. While this obscures solar observations for a
short while, it offers the chance for an interesting view of the shadow of the moon. The
moon’s crisp horizon can be seen up against the sun, because the moon does not have an
atmosphere. (At other times of the year, when Earth blocks SDO’s view, the Earth’s
horizon looks fuzzy due to its atmosphere.)
If one looks closely at such a crisp border,
the features of the moon’s opography are visible, as is the case in this image from Oct. 7,
2010. This recently inspired two NASA visualizers to overlay a 3-dimensional model of the
moon based on data from NASA’s Lunar Reconnaissance Orbiter, or LRO, into the shadow
of the SDO image. Such a task is fairly tricky, as the visualizers — Scott Wiessinger who
typically works with the SDO imagery and Ernie Wright who works with the LRO imagery --
had to precisely match up data from the correct time and viewpoint for the two separate
instruments. The end result is an awe-inspiring image of the sun and the moon
Image Credit: NASA/SDO/LRO/GSFC


http://wtv-zone.com/emma/floral/gifs/wildrosesmall.gif

Sandy
(Maryschild)

[athenacp]

TY for posting:)