Subj : Daily APOD Report To : All From : Ben Ritchey Date : Thu May 02 2019 10:08:34 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. 2019 May 2 [2] Manicouagan Impact Crater from Space Image Credit: NASA [3] , International Space Station Expedition 59 [4] Explanation: Orbiting 400 kilometers above Quebec, Canada, planet Earth, the International Space Station Expedition 59 crew [5] captured this snapshot of the broad St. Lawrence River and curiously circular Lake Manicouagan on April 11. Right of center, the ring-shaped lake is a modern reservoir [6] within the eroded remnant of an ancient 100 kilometer diameter impact crater. The ancient crater is very conspicuous from orbit [7] , a visible reminder that Earth is vulnerable to rocks from space [8] . Over 200 million years old, the Manicouagan crater was likely caused by the impact of a rocky body about 5 kilometers in diameter. Currently, there is no known asteroid with a significant probability of impacting Earth in the next century. But a fictional scenario to help practice for an asteroid impact [9] is on going [10] at the 2019 IAA Planetary Defense Conference [11] . Tomorrow's picture: Le Grand Nuage ------------------------------------------------------------------------------- < [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/1905/iss059e019043.jpg [3] https://www.nasa.gov/ [4] https://www.nasa.gov/mission_pages/station/expeditions/ expedition59/index.html [5] https://blogs.nasa.gov/spacestation/category/ expedition-59/ [6] https://en.wikipedia.org/wiki/Manicouagan_Reservoir [7] ap180529.html [8] ap130812.html [9] https://cneos.jpl.nasa.gov/pd/cs/pdc19/ [10] https://sservi.nasa.gov/event/ 2019-iaa-planetary-defense-conference-live-stream/ [11] https://www.nasa.gov/feature/ nasa-fema-international-partners-plan-asteroid-impact-exercise [12] ap190501.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=190502 [22] ap190503.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 A43 (Windows/32) * Origin: FIDONet - The Positronium Repository (1:393/68) .