28 March 2024 - Mission Day: 10345 - DOY: 088
Gallery
 
 

MDI Sunspot size winner -- Active region 10486 became the largest sunspot seen by SOHO, It unleashed a spectacular show on 28 October 2003. An X 17.2 flare, the second largest flare observed by SOHO and the third largest ever recorded, blasted off a strong high energy proton event and a fast-moving Coronal Mass Ejection. The spot occupied an area equal to about 15 Earths, a size not seen since 1989. It later fired off the largest X-ray flare recorded, on 4 November 2003.

Downloads

 
 

• European Site • US Site

 

Feedback & Comments: SOHO Webmaster

Last modification: July 27, 2020

SOHO
and
SOHO
SOHO is a project of international cooperation between