The document summarizes key facts about the outer planets - Jupiter, Saturn, Uranus, Neptune and Pluto. It describes their sizes, compositions, notable moons and orbital properties. Jupiter and Saturn are gas giants composed primarily of hydrogen and helium. Uranus and Neptune contain more ices and are sometimes called ice giants. Pluto is much smaller and composed of rock and frozen water. The largest moons include Ganymede, Titan and Triton. Their orbits vary in distance and period around the Sun.