What is Venus made of?

Venus has the densest atmosphere of all the planets. Its atmosphere is made of mostly carbon dioxide sense there is no carbon cycle to return the carbon back to the surface and no organic life to absorb it, there are also several layers of clouds, kilometers thick of sulfuric acid.


        The composition of the planet is very similar to earth, with a solid iron core 3,000 km in radius, molten rocky mantle making up most of the planet, and solid outer crust that is thicker than previously presumed. Venus does not have plates, but instead the pressure from the mantle is relieved in a few small places.