I have looked forward to this as much as I still look forward to the New Horizons probe to the outermost edge of the solar system, to Pluto.<p>Mercury has some exhilarating mysteries, and I look forward to seeing the probe unlock them.
Looks like you don't want to be there when it 'rains'. But it's amazing how far the impact of the big crater reaches. I wonder if these are cracks in the surface or sprays of dust.