Subj : Daily APOD Report To : All From : Ben Ritchey Date : Fri Aug 03 2018 10:00:59 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 3 [2] Central Lunar Eclipse Image Credit & Copyright [3] : Anthony Ayiomamitis [4] (TWAN [5] ) Explanation: Reddened by scattered sunlight, the Moon in the center is passing through the center of Earth's dark umbral shadow [6] in this July 27 lunar eclipse sequence [7] . Left to right the three images are from the start, maximum, and end to 103 minutes of totality from the longest lunar eclipse of the 21st century. The longest path the Moon can follow through Earth's shadow does cross the shadow's center, that's what makes such central lunar eclipses long ones [8] . But July 27 was also the date of lunar apogee, and at the most distant part of its elliptical orbit the Moon moves slowest. For the previous lunar eclipse, last January 31, the Moon was near its orbital perigee. Passing just south of the Earth shadow central axis, totality lasted only 76 minutes. Coming up [9] on January 21, 2019, a third consecutive total lunar eclipse will also be off center and find the Moon [10] near perigee. Then totality will be a mere [11] 62 minutes long. Tomorrow's picture: Central Cygnus Skyscape ------------------------------------------------------------------------------- < [12] | Archive [13] | Submissions [14] | Index [15] | Search [16] | Calendar [17] | RSS [18] | Education [19] | About APOD [20] | Discuss [21] | > [22] ------------------------------------------------------------------------------- Authors & editors: Robert Nemiroff [23] (MTU [24] ) & Jerry Bonnell [25] (UMCP [26] ) NASA Official: Phillip Newman Specific rights apply [27] . NASA Web Privacy Policy and Important Notices [28] A service of: ASD [29] at NASA [30] / GSFC [31] & Michigan Tech. U. [32] ---------- Site notes: [1] archivepix.html [2] image/1808/ecl-lun-2018-07-27-seq-1ayiomamitis.jpg [3] lib/about_apod.html#srapply [4] http://www.perseus.gr/ [5] http://www.twanight.org/ayiomamitis [6] ap130425.html [7] http://www.perseus.gr/Astro-Eclipses-2018-07-27-Seq-1.htm [8] ap000726.html [9] http://www.eclipsewise.com/lunar/LEprime/2001-2100/ LE2019Jan21Tprime.html [10] https://www.nasa.gov/content/eclipses-and-transits-overview [11] ap150408.html [12] ap180802.html [13] archivepix.html [14] lib/apsubmit2015.html [15] lib/aptree.html [16] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search [17] calendar/allyears.html [18] /apod.rss [19] lib/edlinks.html [20] lib/about_apod.html [21] http://asterisk.apod.com/discuss_apod.php?date=180803 [22] ap180804.html [23] http://www.phy.mtu.edu/faculty/Nemiroff.html [24] http://www.phy.mtu.edu/ [25] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html [26] http://www.astro.umd.edu/ [27] lib/about_apod.html#srapply [28] https://www.nasa.gov/about/highlights/HP_Privacy.html [29] https://astrophysics.gsfc.nasa.gov/ [30] https://www.nasa.gov/ [31] https://www.nasa.gov/centers/goddard/ [32] http://www.mtu.edu/ --- Mystic BBS v1.12 A39 (Windows/32) * Origin: FIDONet - The Positronium Repository (1:393/68) .