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

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    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]
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Site notes:
  [1] archivepix.html
  [2] image/1905/iss059e019043.jpg
  [3] https://www.nasa.gov/
  [4] https://www.nasa.gov/mission_pages/station/ex...
expedition59/index.html
  [5] https://blogs.nasa.gov/spacestation/category/ expedition-59/
  [6] https://en.wikipedia.org/wiki/Manicouagan_Res...
  [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/apo...
  [17] calendar/allyears.html
  [18] /apod.rss
  [19] lib/edlinks.html
  [20] lib/about_apod.html
  [21] http://asterisk.apod.com/discuss_apod.php?dat...
  [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/jbonnel...
  [26] http://www.astro.umd.edu/
  [27] lib/about_apod.html#srapply
  [28] https://www.nasa.gov/about/highlights/HP_Priv...
  [29] https://astrophysics.gsfc.nasa.gov/
  [30] https://www.nasa.gov/
  [31] https://www.nasa.gov/centers/goddard/
  [32] http://www.mtu.edu/

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