This image shows two large sunspot groups on the surface of the Sun. It was produced by the MDI (Michelson Doppler Imager) instrument on the SOHO (Solar & Heliospheric Observatory) spacecraft at 14:24 UT on 24 October 2003. The sunspot groups are "named" group 484 (near center) and group 486 (near left limb).
Image courtesy NASA/SOHO.