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
Solar hot water in Australia at least one of the following concession cards: Following to the installation, the householder has up to three months to send in the application to receive the rebate if the below criteria is met. The water heating system does not replace existing one: The water heating system does replace existing one: No Rebates other than the Federal Government's are offered by the Tasmanian Government at the moment. Sustainability Victoria’s solar hot water program, sponsored by the Victorian government, offers rebates to householders who have installed a system abides that the following criteria: New houses and buildings can get a rebate