                  APOD: 2017 September 14 - Flare Well AR2673

                         Astronomy Picture of the Day

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                              2017 September 14
                                      [2]
                              Flare Well AR2673
                  Image Credit: NASA [3] , SDO [4] , GSFC [5]

Explanation: Almost out of view from our fair planet [6] , rotating around the
Sun's western edge giant active region AR2673 lashed out [7] with another
intense solar flare followed by a large coronal mass ejection [8]  on
September 10. The flare itself is seen here at the right in an extreme
ultraviolet image from the sun-staring Solar Dynamics Observatory. This
intense flare was the fourth X-class [9] flare from AR2673 this month [10] .
The active region's most recent associated coronal mass ejection collided with
Earth's magnetosphere 2 days later [11] . Say farewell to the mighty AR2673,
for now. For the next two weeks, the powerful sunspot group will be on the
Sun's far side [12] .

                        Mission: Farewell Cassini [13]
                  Tomorrow's picture: 100 steps forward [14]

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    Authors & editors: Robert Nemiroff [26] (MTU [27] ) & Jerry Bonnell [28]
                                  (UMCP [29] )
          NASA Official:  Phillip Newman Specific rights apply [30] .
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              A service of: ASD [32]  at NASA [33]  / GSFC [34]
                           & Michigan Tech. U. [35]
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Site notes:
  [1] archivepix.html
  [2] image/1709/SDOsept10x8blend1311714k.jpg
  [3] https://www.nasa.gov/
  [4] https://sdo.gsfc.nasa.gov/
  [5] https://www.nasa.gov/goddard/
  [6] ap170909.html
  [7] https://www.nasa.gov/feature/goddard/2017/
active-region-on-sun-continues-to-emit-solar-flares
  [8] ap160110.html
  [9] http://www.spaceweather.com/glossary/flareclasses.html
  [10] https://svs.gsfc.nasa.gov/12706
  [11] http://spaceweather.com/ archive.php?view=1&day=12&month=09&year=2017
  [12] http://soi.stanford.edu/data/full_farside
  [13] https://www.nasa.gov/press-release/
nasa-announces-cassini-end-of-mission-media-activities
  [14] ap170915.html
  [15] ap170913.html
  [16] archivepix.html
  [17] lib/apsubmit2015.html
  [18] lib/aptree.html
  [19] http://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  [20] calendar/allyears.html
  [21] /apod.rss
  [22] lib/edlinks.html
  [23] lib/about_apod.html
  [24] http://asterisk.apod.com/discuss_apod.php?date=170914
  [25] ap170915.html
  [26] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [27] http://www.phy.mtu.edu/
  [28] http://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [29] http://www.astro.umd.edu/
  [30] lib/about_apod.html#srapply
  [31] http://www.nasa.gov/about/highlights/HP_Privacy.html
  [32] http://astrophysics.gsfc.nasa.gov/
  [33] http://www.nasa.gov/
  [34] http://www.nasa.gov/centers/goddard/
  [35] http://www.mtu.edu/
