"<strong>July 14:</strong> NASA's <a href=""http://www.cnn.com/2014/08/25/tech/gallery/pluto/index.html"" target=""_blank"">New Horizons spacecraft</a> captured this enhanced-color view of Pluto before flying by the icy world and its moons. The mission completed what NASA calls the reconnaissance of the classical solar system, and it made the United States the first nation to send a space probe to every planet from Mercury to Pluto."