85 Years after the Discovery of Pluto, New Horizons Spots Small Moons Orbiting Pluto

Explanation: The moons Nix and Hydra are visible in a series of images taken by the New Horizons spacecraft from Jan. 27-Feb. 8, at distances ranging from about 125 million to 115 million miles (201 million to 186 million kilometers). The long-exposure images offer the best view yet from New Horizons of these two small moons circling Pluto, which Tombaugh discovered at Lowell Observatory in Flagstaff, Arizona, on Feb. 18, 1930.


Image credits: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute.