Friday’s science update from the New Horizons team shed some more light on the seemingly endless jaw-dropping discoveries from the Pluto system.  We have found a surprising atmosphere and very cold ice flows, contributing to a surprisingly active geology for an object that receives so little sunlight.  Seven hours after the craft made its closest approach of Pluto, it turned around and took a backlit shot, revealing two distinct layers of hazy atmosphere at 80 Km and 50 Km above the surface respectively. It looks more like an eclipse photograph from much closer to home, but it shows a hauntingly...