17 April 2024 - Mission Day: 10365 - DOY: 108
Pick of The Week

Seeing the Sun's magnetic field lines (February 12, 2002)

  • Movie (Quicktime,936K)
  • Movie (MPEG,371K)
  • Higher resolution version (TIF,3.7M)
  • In a low-density but highly ionized gas (or "plasma") such as the Sun's outer atmosphere, the magnetic field rules: charged particles must spiral around tight, loop-like magnetic fields, but might actually escape from the Sun --- as the solar wind --- where the field is nearly open (nearly straight field lines). The closed magnetic loops originate in bright "active regions" in this image of 1 million K material in the lower corona, while the open field originates in coronal "holes" of lower density and brightness.

    Previous Picks of the Week

      SOHO began its Weekly Pick some time after sending a weekly image or video clip to the American Museum of Natural History (Rose Center) in New York City. There, the SOHO Weekly Pick is displayed with some annotations on a large plasma display.

      If your institution would also like to receive the same Weekly Pick from us for display (usually in Photoshop or QuickTime format), please send your inquiry to steele.hill@gsfc.nasa.gov.


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    Last modification: July 27, 2020

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