19 October 2021 - Mission Day: 9454 - DOY: 292
Pick of The Week

CMEs - Two for One (October 2, 2002)

  • Higher resolution version (TIF,4.3M)
  • Movies: MPEG (703K), Quicktime (967K)
  • Two coronal mass ejections (CMEs) were observed by SOHO's LASCO C2 instrument on 27 September 2002. In close sequence, two CMEs blasted out from the Sun within hours of each other (at the ten o'clock and seven o'clock positions). Though not particularly strong or large, these are not often seen so close together in time. CMEs eject a billion tons of particles traveling one to two millions of miles an hour. The dark disk blocks the Sun so that the LASCO instrument can observe the structures of the corona in visible light - structures a billion times fainter than the disk of the Sun. The CMEs did not appear to be Earth-directed.

    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.


    • European Site • US Site


    Feedback & Comments: SOHO Webmaster

    Last modification: July 27, 2020

    SOHO is a project of international cooperation between