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Volume 22, Number 26

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 June 30, 2017                                  Vol. 22, No. 26


   The Solar Eclipse: NASA | Stack Exchange | Megamovie Project


                     THE SOLAR ECLIPSE: NASA

 A total solar eclipse is coming!

 On Monday, August 21, the moon will block the sun in a way that
 turns day into night across parts of Oregon, Idaho, Montana,
 Wyoming, Nebraska, Kansas, Iowa, Missouri, Illinois, Kentucky,
 Tennessee, Georgia, North Carolina, and South Carolina. With
 the help of solar viewing glasses or other equipment, all of
 North America will be able to view at least a partial eclipse
 that lasts two to four hours.

 The first eclipse to cross the entire continental United States
 since 1918, it will reveal planets, bright stars, and our own
 sun's otherwise hidden atmosphere.

 NASA has unveiled free science and safety resources to download
 for the spectacle, including--

    - maps;
    - posters;
    - fact sheets in English and Spanish; 
    - misconceptions about eclipses;
    - suggestions for planning watch parties; and
    - .stl files for 3D printed pinhole projectors in the shapes
      of each state and of the contiguous U.S.


 A 44-page guide contains such activities as--
     - "Seeing the Invisible";
     - "Let's See Light in a New Way";
     - "Make Sun S'Mores!";
     - "How Big Is Big?"; and
     - "How Do Eclipses Work?"

 In particular, check out NASA's selection of 15
 math challenges:


 Whether or not the syzygy casts its 72 mile-wide shadow on you
 eight Mondays from today, tune in to NASA Television for live
 video of the celestial event. The space agency's broadcast
 "Eclipse Across America: Through the Eyes of NASA" will also
 provide coverage of activities in parks, libraries, stadiums,
 festivals, and museums across the nation:





 The same day last week that NASA held its first media briefings
 devoted to the August astronomical event, an online community
 of math teachers began exchanging educational questions and
 projects on the theme of solar eclipses.

 Stack Exchange for Mathematics Educators first appeared in
 these pages when it reached public beta. Since that launch
 three years ago, the Q&A site for math teachers has grown to
 nearly 6,000 users while maintaining its response rate of 95%.




 A simulator has already come online that models how daylight
 will fall on August 21 specific to where you live.

 Visit the Eclipse Megamovie Project website and enter your
 location to see an animation of the sun's light being blocked
 out by the moon -- including what time to watch and where to
 enjoy the best viewing experience:


 The Simulator is part of a larger, first-of-its-kind citizen
 science project of Google and the University of California,
 Berkeley. Their teams of scientists invite the public to
 contribute to continuous datasets that far exceed what any one
 person could capture from a single location. By stitching
 together images photographed by citizen scientists at various
 points along the eclipse path, they aim to produce a
 high-definition, time-expanded video of the sun's corona and
 the eclipse's "diamond ring effect."

 Keen to join this citizen science effort? Sign into Google
 after consulting the site's FAQ:


 For guides on shooting stills, capturing videos, and the finer
 points of solar eclipse exposure, scroll down to the "Eclipse
 Photography" section at the bottom of "Resources":



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