solar activity events since the advent of space-based solar observing. The Michelson Doppler Interferometer (MDI) records images at several very narrow wavelength bands in the visible light . These images are often used as proxies for white-light solar images. Date 2008-03-26 (data collected between 2003-10-25T00:00:11Z and 2003-11-07T23:48:35Z) Source http://svs.gsfc.nasa.gov/goto?3502 (movie and description)