What is the brown stuff in the cracks?
Waiting until the teenage boys stop snickering. And yes, the Uranus
joke has gotten way old, too.
Instead of drilling through all that ice, maybe we should aim our
landers at one of those areas. Is it decaying organic material from
the subice global ocean? The Europan version of plankton and
seaweed?
Just be careful about finding chlorophyl - probes tend to get fried by
bolts of light when they find it there.