This video describes how NASA's Hubble Space Telescope has provided increasingly better pictures of Pluto since the telescope's launch into Earth orbit in 1990. Since its discovery in 1930, Pluto has been a speck of light in the largest ground-based telescopes. But the Hubble telescope has now mapped the planet in never-before-seen detail. The images reveal a changing landscape of snow-white and orange-black regions. The Hubble pictures underscore that Pluto is not simply a ball of ice and rock but a dynamic world that undergoes dramatic atmospheric changes.