Complex sentence: The most important information today comes from SOHO (a project of international cooperation between ESA and NASA), such as the MDI Magnetogram, where the solar "surface" magnetic field can be seen.
Split into simpler sentences: The most important information today comes from SOHO (a project of international cooperation between ESA and NASA). One image shown on that page is MDI Magnetogram, where the solar "surface" magnetic field can be seen.