NASA won't see any images or get any data from Pluto flyby mission New Horizons for 22 hours after it begins its closest flyby of the dwarf planet. There are two reasons for what's effectively a radio silence. The first reason is the applicable power. Every single resource the craft passing Pluto is capable of using will be going toward capturing imagery and data on and around Pluto. That should be obvious. We've waited years - we can wait a few more hours.