Terrestrial planet Terrestrial planet A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets are the inner planets closest to the Sun, i.e. Mercury, Venus, Earth, and Mars. The terms "terrestrial planet" and "telluric planet" are derived from Latin words for Earth ("Terra" and "Tellus"), as these planets are, in terms of structure, "Earth-like". Terrestrial planets have a solid planetary surface, making them substantially different from the larger giant planets, which are composed mostly of some combination of hydrogen, helium, and water existing in various
Gustav Holst of the work was given at The Old Vic, preceded by an introductory talk by Vaughan Williams. "The Times" praised Holst and his forces for "a most interesting and artistic performance of this very important work". After this success, Holst was disappointed the following year by the lukewarm reception of his choral work "The Cloud Messenger". He again went travelling, accepting an invitation from H. Balfour Gardiner to join him and the brothers Clifford and Arnold Bax in Spain. During this holiday Clifford Bax introduced Holst to astrology, an interest that later inspired his suite "The Planets". Holst cast his