NASA’s New Horizons spacecraft has been traveling for nine and a half years, speeding ever closer to our solar system’s last major unexplored world: Pluto. For the first time ever, scientists are getting close-up views of the most popular dwarf planet, and today is the pinnacle of New Horizons' whole 3-billion-mile trip. Celebrate the closest approach with Astronomy and Discover magazines as we bring you all the latest information live right here today and tomorrow. [Read More: What to expect this week from New Horizons]
