Pluto is located over 2 billion miles from Earth in space and is too far away to see with the naked eye. It is composed of ice, rock, and craters. Pluto was discovered in the 1930s and has three moons: Nix, Hydra, and Char. A space craft called New Horizons arrived at Pluto in 2015 to learn more about it since scientists cannot observe details of Pluto from Earth. Temperatures on Pluto are extremely cold at -232 Celsius, making it impossible to live there due to the thin atmosphere and weak gravity. A proposed robot would collect dust samples on Pluto to help scientists learn more about its composition through pictures and analysis back on Earth.