The Sun blew out a powerful coronal mass ejection (CME) from just around the edge of the Sun (Oct. 14, 2014). The particle cloud expanded around all the Sun in a rough circle, hence the name 'halo' CME. This event was also associated with a fairly strong flare. The active region that was the source of these events is just rotating into view. Then, we can better observe its size and structure. The bright object to the right and just above the Sun is Venus now on the far side of the Sun.


NASA image use policy.
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.


  • Title: Far-Side Halo Outburst
  • Date Created: 2017-12-08
  • Location: Greenbelt, MD
  • Rights: GSFC
  • Album: ayoung

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