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,
Sun Ra and his Solar Arkestra Visits Planet Earth unless otherwise noted; Side A: Side B: The sides were switched for the Evidence reissue, as well as being coupled with the album "Interstellar Low Ways". On "Reflections In Blue", "Two Tones", "El Viktor" and "Saturn", recorded at the Balkan Studio, Chicago, November 1, 1956; On "Planet Earth", "Eve" and "Overtones of China" recorded at Rehearsals, late 1957 or 1958; Sun Ra and his Solar Arkestra Visits Planet Earth Sun Ra and his Solar Arkestra Visits Planet Earth is a jazz album by the American musician Sun Ra and his Solar Arkestra. Recorded between late 1956 and 1958, the album