The surface environment of Europa presents a unique challenge for
astrobiology. While the putative sub-surface ocean may be habitable,
the harsh radiation at the surface will pose severe problems for the
survivability and subsequent detectability of conventional biomarkers.
During this talk I will discuss the implications of the Europan surface
radiation environment for the habitability of a sub-surface ocean and
the implications of this environment for the detection of life on this
moon.