 A detailed study of the extreme properties of CoRoT-7b has been published, concluding that, despite the mass uncertainty, the planet is Earth-like in composition.The extreme proximity to the star should prevent the formation of a significant atmosphere, with the dayside hemisphere as hot as the tungsten filament of an incandescent bulb, resulting in the formation of a lava ocean.The researchers propose to name this new class of planets, CoRoT-7b being the first of them, "lava-ocean planets".