This Web site describes Lowell Observatory's Planets, Small Solar System Bodies, Astrophysics, and Comets research programs. Visitors can learn about studies of Jupiter's volcanic moon, Io and of Pluto, the planet discovered at Lowell Observatory. The site supplies researchers with Galileo photo polarimeter radiometer (PPR) data as well as an immense amount of asteroid information including plots depicting the position of stars and asteroids within user-specified parameters. Amateur astronomers will find helpful advice from Syuichi Nakano about the equipment to use while making asteroid observations.