In a couple of hours from the time of this posting, NASA's New Horizons will make its closest pass to Jupiter (at 05:45 Universal Time on Feb. 28, 2007), just thirteen months after it was dispatched on the first mission to Pluto and the Kuiper Belt. Already the fastest spacecraft ever launched, New Horizons will pick up even more speed as it slingshots past Jupiter on its trip to Pluto and eventually out of the Solar System.