section_path: Physical characteristics
section_name: Physical characteristics
paragraph_text: Physical characteristics
  
  Jupiter is a gas giant, meaning its chemical composition is primarily hydrogen and helium. These materials are classified as gasses in planetary geology, a term that does not denote the state of matter. It is the largest planet in the Solar System, with a diameter of 142,984 km (88,846 mi) at its equator, giving it a volume 1,321 times that of the Earth. Its average density, 1.326 g/cm, is lower than those of the four terrestrial planets.