Subj : Daily APOD Report To : All From : Ben Ritchey Date : Wed Aug 08 2018 10:44:26 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. 2018 August 8 Animation: Perseid Meteor Shower Visualization Credit: Ian Webster [2] ; Data: NASA [3] , CAMS [4] , Peter Jenniskens [5] (SETI Institute [6] ) Explanation: Where do Perseid meteors come from? Mostly small bits of stony grit, Perseid meteoroids [7] were once expelled from Comet Swift-Tuttle [8] and continue to follow this comet's orbit as they slowly disperse. The featured animation [9] depicts the entire meteoroid stream as it orbits our Sun [10] . When the Earth nears this stream, as it does every year, the Perseid Meteor Shower [11] occurs. Highlighted as bright in the animation, comet debris [12] this size is usually so dim it is practically undetectable. Only a small fraction of this debris will enter the Earth's atmosphere [13] , heat up and disintegrate brightly [14] . This weekend promises some of the better skies to view the Perseid shower [15] as well as other active showers [16] because the new moon [17] will not only be faint, it will be completely absent from the sky for most of the night. Although not outshining faint Perseids [18] , the new moon will partially obstruct the Sun as a partial solar eclipse [19] will be visible from [20] some northern locations. Tomorrow's picture: open space ------------------------------------------------------------------------------- < [21] | Archive [22] | Submissions [23] | Index [24] | Search [25] | Calendar [26] | RSS [27] | Education [28] | About APOD [29] | Discuss [30] | > [31] ------------------------------------------------------------------------------- Authors & editors: Robert Nemiroff [32] (MTU [33] ) & Jerry Bonnell [34] (UMCP [35] ) NASA Official: Phillip Newman Specific rights apply [36] . NASA Web Privacy Policy and Important Notices [37] A service of: ASD [38] at NASA [39] / GSFC [40] & Michigan Tech. U. [41] ---------- Site notes: [1] archivepix.html [2] http://www.ianww.com/ [3] https://www.nasa.gov/ [4] http://cams.seti.org/ [5] https://www.seti.org/our-scientists/peter-jenniskens [6] https://www.seti.org/ [7] https://solarsystem.nasa.gov/small-bodies/meteors-and-meteorites/perseids/ in-depth/ [8] https://en.wikipedia.org/wiki/Comet_Swift%E2%80%93Tuttle [9] https://www.meteorshowers.org/view/Perseids [10] https://solarsystem.nasa.gov/solar-system/sun/overview/ [11] https://en.wikipedia.org/wiki/Perseids [12] https://www.nasa.gov/mission_pages/epoxi/images/pia13622.html [13] https://airs.jpl.nasa.gov/system/internal_resources/details/original/ 22_earth-atmosphere-layers.jpg [14] ap011118.html [15] ap170818.html [16] http://cams.seti.org/FDL/ [17] https://moon.nasa.gov/resources/54/phases-of-the-moon/ [18] https://www.nasa.gov/sites/default/files/atoms/video/ jpl-20180801-whatsuf-0001-180cc.mp4 [19] ap140430.html [20] https://www.timeanddate.com/eclipse/globe/2018-august-11 [21] ap180807.html [22] archivepix.html [23] lib/apsubmit2015.html [24] lib/aptree.html [25] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search [26] calendar/allyears.html [27] /apod.rss [28] lib/edlinks.html [29] lib/about_apod.html [30] http://asterisk.apod.com/discuss_apod.php?date=180808 [31] ap180809.html [32] http://www.phy.mtu.edu/faculty/Nemiroff.html [33] http://www.phy.mtu.edu/ [34] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html [35] http://www.astro.umd.edu/ [36] lib/about_apod.html#srapply [37] https://www.nasa.gov/about/highlights/HP_Privacy.html [38] https://astrophysics.gsfc.nasa.gov/ [39] https://www.nasa.gov/ [40] https://www.nasa.gov/centers/goddard/ [41] http://www.mtu.edu/ --- Mystic BBS v1.12 A39 (Windows/32) * Origin: FIDONet - The Positronium Repository (1:393/68) .