Composition:
* Hydrogen (H2): Approximately 89.8% by mass
* Helium (He): Approximately 10.2% by mass
* Trace elements: These make up less than 1% and include methane, ammonia, water, and heavier elements like carbon, nitrogen, oxygen, phosphorus, sulfur, and possibly even some noble gases.
Structure:
Jupiter's structure can be broadly divided into three layers:
* Gaseous outer layer: This is the visible atmosphere, composed primarily of hydrogen and helium. It features strong winds, turbulent storms like the Great Red Spot, and swirling cloud bands.
* Liquid metallic hydrogen layer: Underneath the atmosphere, immense pressure forces hydrogen molecules to break down into individual atoms, forming a metallic state that behaves like a liquid conductor. This layer is thought to be responsible for Jupiter's strong magnetic field.
* Rocky core: While the exact composition of Jupiter's core is unknown, it's believed to be a solid, rocky structure composed of heavier elements. It's likely about 10-15 times the mass of Earth.
Key Points:
* Jupiter's composition is very similar to the Sun's, which is why it's often referred to as a "failed star."
* The immense pressure and temperature within Jupiter create exotic states of matter like metallic hydrogen.
* Jupiter's composition is mainly determined through spectroscopic analysis of its atmosphere.
It's important to remember that Jupiter's interior structure is still a subject of ongoing scientific research, and our understanding of its composition is constantly evolving.
