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 by selling the RECs their system is eligible. The Commonwealth government is also offering a $1000 rebate to the replacement of electric water heating. Residential and community buildings: Commercial buildings: By installing an environmentally friendly, gas-boosted solar water heater that replaces a previous water electric heating system, you are eligible of the Government of Western Australia’s rebate Solar hot water in Australia Solar hot water is water heated using only natural energy from the sun. Solar energy heats up large panels called thermal collectors commonly known as solar panels. The energy is transferred through a fluid (often water) to a