Solar System largely of materials with lower melting points. The boundary in the Solar System beyond which those volatile substances could condense is known as the frost line, and it lies at roughly 5 AU from the Sun. The objects of the inner Solar System are composed mostly of rock, the collective name for compounds with high melting points, such as silicates, iron or nickel, that remained solid under almost all conditions in the protoplanetary nebula. Jupiter and Saturn are composed mainly of gases, the astronomical term for materials with extremely low melting points and high vapour pressure, such as hydrogen, 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