what is jupiter's composition
Composition. Jupiter is mainly composed of gases primarily hydrogen and helium. Hydrogen makes up most of the gases with a mass composition of 75% while helium is a quarter of its mass of about 24%.The remaining one percent consists of other elements.upiter is mainly composed of gases primarily hydrogen and helium. Hydrogen makes up most of the gases with a mass composition of 75% while helium is a quarter of its mass of about 24%. The remaining one percent consists of other elements.