Pluto + 1: A Year After New Horizons Made It a World

One year ago today, on July 14, 2015, the New Horizons spacecraft shot past Pluto and its system of weird moons, making space history (and the history of the mission itself is great reading). It was the first time a probe had been sent to an ice world specifically to study it in detail, and --depending on your personal viewpoint-- Pluto was the first dwarf planet ever seen up close, or the last planet seen up close, or the first Kuiper Belt object seen up close. Whatever. Pluto is what it is, a...