CME trio (July 8, 2004)
Hi-res TIF image (4.1M).
Over a day and a half (June 26-27, 2004), SOHO observed three coronal mass ejections (CMEs) as they erupted from the Sun. These events were not powerful CMEs nor were they headed in a direction that would likely generate Earth effects. The still shows the first CME of the trio which appears to maintain a hollow circular shape at its head as it expands out towards the frame's edge.
All three CMEs can be seen in the video clip taken by the LASCO C3 instrument. The other two CMEs seem to emerge from the same active region which had already rotated around the edge of the Sun. The Sun (represented by the white circle in the center) is blocked out by an occulting disk so that the instrument can observe activity in the faint corona.
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 firstname.lastname@example.org.