             APOD: 2018 June 18 - An Active Prominence on the Sun

                         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 June 18
                       An Active Prominence on the Sun
        Video Credit: Chuck Ayoub [2] (Chuck's Astrophotography [3] )

Explanation: Sometimes the Sun's surface becomes a whirlwind of activity.
Pictured [4]  is a time-lapse video of the Sun [5] 's surface taken over a two
hour period in early May, run both forwards and backwards. The Sun's surface
[6]  was blocked out so that details [7] over the edge could be imaged in
greater detail. Hot plasma [8]  is seen swirling over the sol [9] ar limb in
an ongoing battle between changing magnetic fields [10]  and constant gravity.
The featured prominence rises [11]  about one Earth-diameter over the Sun's
surface. Energetic events like [12] this are becoming less common as the Sun
nears a minimum in its 11-year activity cycle [13] .

                  Tomorrow's picture: oceans of ancients [14]

-------------------------------------------------------------------------------
< [15] | Archive [16] | Submissions [17] | Index [18] | Search [19] | Calendar
  [20] | RSS [21] | Education [22] | About APOD [23] | Discuss [24] | > [25]
-------------------------------------------------------------------------------

    Authors & editors: Robert Nemiroff [26] (MTU [27] ) & Jerry Bonnell [28]
                                  (UMCP [29] )
          NASA Official:  Phillip Newman Specific rights apply [30] .
              NASA Web Privacy Policy and Important Notices [31]
              A service of: ASD [32]  at NASA [33]  / GSFC [34]
                           & Michigan Tech. U. [35]
----------
Site notes:
  [1] archivepix.html
  [2] mailto: chuckayoub @at@ gmail .dot. com
  [3] https://www.astrobin.com/users/YobSnob/
  [4] https://www.astrobin.com/346016/?nc=user
  [5] https://solarsystem.nasa.gov/solar-system/sun/in-depth/
  [6] ap170219.html
  [7] https://www.youtube.com/watch?v=jKLWrsoip3I
  [8] https://en.wikipedia.org/wiki/Plasma_(physics)
  [9] https://en.wikipedia.org/wiki/Sun
  [10] https://www.nasa.gov/feature/goddard/2016/understanding-the-magnetic-sun
  [11] ap160919.html
  [12] ap160306.html
  [13] https://solarscience.msfc.nasa.gov/images/Cycle22Cycle23Cycle24big.gif
  [14] ap180619.html
  [15] ap180617.html
  [16] archivepix.html
  [17] lib/apsubmit2015.html
  [18] lib/aptree.html
  [19] https://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=180618
  [25] ap180619.html
  [26] http://www.phy.mtu.edu/faculty/Nemiroff.html
  [27] http://www.phy.mtu.edu/
  [28] https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  [29] http://www.astro.umd.edu/
  [30] lib/about_apod.html#srapply
  [31] https://www.nasa.gov/about/highlights/HP_Privacy.html
  [32] https://astrophysics.gsfc.nasa.gov/
  [33] https://www.nasa.gov/
  [34] https://www.nasa.gov/centers/goddard/
  [35] http://www.mtu.edu/
