  The giant planet Saturn was observed by XMM-Newton in September 2002. We
present and analyse these XMM-Newton observations and compare our findings to
the Chandra observations of Saturn. Contamination of the XMM-Newton data by
optical light is found to be severe in the medium and thin filters, but with
the thick filter all optical light is sufficiently blocked and the signal
observed in this filter is interpreted as genuine X-ray emission, which is
found to qualitatively and quantitatively resemble Saturn's Chandra spectrum
very well.
