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
Are We Changing Planet Earth? Are We Changing Planet Earth? Are We Changing Planet Earth? and Can We Save Planet Earth? are two programmes that form a documentary about global warming, presented by David Attenborough. They were first broadcast in the United Kingdom on 24 May and 1 June 2006 respectively. Part of a themed season by the BBC entitled "Climate Chaos", the programmes were produced in conjunction with the Discovery Channel and the Open University. They were directed by Nicolas Brown and produced by Jeremy Bristow. The music was composed by Samuel Sim. Attenborough undertook the assignment in between his 'Life' series "Life in