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,
Third Stone from the Sun Third Stone from the Sun "Third Stone from the Sun" (or "3rd Stone from the Sun") is a mostly instrumental composition by American musician Jimi Hendrix. It incorporates several musical approaches, including jazz and psychedelic rock, with brief spoken passages. The title reflects Hendrix's interest in science fiction and is a reference to Earth in its position as the third planet away from the sun in the solar system. Hendrix developed elements of the piece prior to forming his group, the Jimi Hendrix Experience. The Experience recorded versions as early as December 1966, and, in 1967, it was included on