Pluto day

For those of us who are space-program tragics, ten years of watching and waiting comes down to today, as New Horizons arrives at Pluto. It has already passed the (dwarf) planet, and in just over two hours NASA will receive an “I'm still here” signal if the spacecraft has, in fact, survived the fly-by. And then then data will come, reams and reams of it, and the snapshot shown here — incomparably better than the few-pixel images we've had in the past — will look low-res.

UPDATE: New Horizons is alive and well after the fly-by!