Posters
Solar Cycle 23 in Sunspots
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Images of the Sun taken in visible light by the ESA/NASA Solar and Heliospheric Observatory (SOHO) Michelson Doppler Imager (MDI) instrument. The MDI instrument was produced by NASA, Stanford ³Ô¹ÏÍø, and the Lockheed Martin Solar and Astrophysics Laboratory in Palo Alto, California. It operated on SOHO from 1995 to 2011. Created using JHelioviewer(jhelioviewer.org) and Apple Keynote software.