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Towering clouds ripple across Jupiter's surface in dramatic patterns. Like the clouds on Earth, these contain water, but on Jupiter, they are far denser and extend much deeper. These layers are so thick that no spacecraft has ever been able to directly observe what lies beneath them. The atmospheric pressure is so immense that it would crush any known vehicle instantly. Now, scientists have taken a major step toward solving this enduring mystery.
A new study led by researchers at the University of Chicago and the Jet Propulsion Laboratory has produced the most detailed model of Jupiter's atmosphere ever created. This work provides a deeper look into the planet's interior without requiring a physical descent into its crushing depths. By using advanced computer simulations, the team has peeled back the layers of gas and ice to reveal secrets hidden for centuries. The results have already reshaped scientific understanding of how the gas giant formed and evolved over time.
One of the study's key findings helps resolve a long-running debate about Jupiter's composition. The researchers estimate that the gas giant contains roughly one and a half times more oxygen than the sun. This result sharply improves scientists' understanding of how Jupiter and the rest of the solar system took shape. It answers a fundamental question about the building blocks of our cosmic neighborhood. "This is a long-standing debate in planetary studies," said Jeehyun Yang, a postdoctoral researcher at the University of Chicago and the study's lead author. "It's a testament to how the latest generation of computational models can transform our understanding of other planets." The study was published on January 8 in The Planetary Science Journal.
Astronomers have been watching Jupiter's turbulent atmosphere for centuries. More than 360 years ago, early telescope observations revealed a massive, persistent feature on the planet's surface. That feature is now known as the Great Red Spot, a colossal storm roughly twice the size of Earth that has raged for hundreds of years. It is only one part of a planet-wide system of violent winds and thick clouds that blanket Jupiter in nearly constant motion. The winds can reach speeds of hundreds of miles per hour, creating a chaotic and dynamic environment.
While these storms are visible from afar, what lies beneath them remains largely unknown. Jupiter's clouds are so dense that NASA's Galileo spacecraft lost contact with Earth when it plunged into the planet's atmosphere in 2003. The probe was crushed by the immense pressure before it could reach the deep layers. Today, NASA's Juno mission studies Jupiter from orbit, gathering data from a safe distance. This mission provides a constant stream of information about the planet's magnetic field and internal structure.