Mercury No "Goldilocks" Planet: 800°F Days, -300°F Nights

Another step in the growth of scientific knowlodge....

There may be polar icecaps, frozen water in its craters and signs of the early stages of plate tectonics on Mercury....

                                                                                                NASA Photos 2011

In NASA's Lens, Mercury Comes Into Focus, by Kenneth Chang, The New York Times, March 31, 2011