Solar System moons. The centaurs and many short-period comets also orbit in this region. Due to their greater distance from the Sun, the solid objects in the outer Solar System contain a higher proportion of volatiles, such as water, ammonia, and methane than those of the inner Solar System because the lower temperatures allow these compounds to remain solid. The four outer planets, or giant planets (sometimes called Jovian planets), collectively make up 99% of the mass known to orbit the Sun. Jupiter and Saturn are together more than 400 times the mass of Earth and consist overwhelmingly of hydrogen and helium.
Planet Lofoten In Montreal, Canada in 2007 and has since then been shown at several galleries around the world including The Louvre. Planet Lofoten Planet Lofoten is a Land Art Installation of the solar system positioned in the open nature of West Lofoten in Northern Norway. The Planets are made from stone and range in size from Jupiter at several hundred kilograms to Pluto at only a few grams, and ranges within an area of 30 km from Reine at Moskenes Island to Nordland at Værøy Island. The Sun is still in the construction process and will be a 7-meter diameter sphere