For centuries,teh gas giant Jupiter and its iconic Great Red Spot have intrigued scientists seeking to understand our solar system’s origins. Now, a new computational model developed by researchers at the University of Chicago and NASA’s Jet Propulsion Laboratory is offering an unprecedented look beneath the planet’s swirling cloudscapes. The model reveals a surprising finding: Jupiter contains roughly 1.5 times more oxygen than the Sun, a discovery that challenges previous estimates and offers crucial insights into the planet’s formation and its potential role as a “time capsule” of the early solar system.
For centuries, Jupiter has captivated astronomers with its turbulent atmosphere and, most notably, the Great Red Spot – a storm larger than Earth that has been observed for at least 360 years, since the first telescopes allowed scientists to document the enormous, persistent feature on the planet’s surface. Understanding Jupiter’s inner workings is a key step in understanding the formation of our solar system and the potential for habitable worlds beyond Earth.
However, what happens beneath that thick layer of clouds has largely remained a mystery. Now, new simulations are offering a closer look at the planet’s interior.
Computational Model Reveals Jupiter’s Interior
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A team of scientists from the University of Chicago and NASA’s Jet Propulsion Laboratory has developed the most comprehensive computational model to date of Jupiter’s atmosphere. The most surprising result: the planet appears to contain approximately 1.5 times more oxygen than the Sun, significantly higher than previous estimates that suggested only about a third, according to researchers in a study published in The Planetary Science Journal.
This finding isn’t merely a chemical curiosity. In addition to improving our understanding of the largest planet in the solar system, it offers new clues about the processes that shaped all the worlds we know, including Earth.
How Did Jupiter Form? The Key is Oxygen
The most likely explanation, supported by the new results, is that Jupiter formed beyond the so-called “snow line,” a distant region from the Sun where water and other compounds can exist as ice. That ice would have contributed large amounts of oxygen in the form of frozen water, facilitating its accumulation on the planet.
Until now, most models studied the chemistry and movement of the atmosphere separately. The team led by Jeehyun Yang, a postdoctoral researcher at the University of Chicago, decided to combine both approaches into a single model. As Yang explains: “The chemistry is important, but it doesn’t include water droplets or cloud behavior. Hydrodynamics alone oversimplifies the chemistry. That’s why it’s important to combine them.”
The new simulation allows researchers to reconstruct how water, clouds, and various chemical processes are redistributed within the planet, slowly rising from very hot internal regions to colder atmospheric zones, providing a more accurate picture of gas circulation on Jupiter. This detailed modeling represents a significant advancement in planetary science.
And there, another surprise emerged: that circulation turns out to be much slower than previously thought. According to the model, the diffusion would be 35 to 40 times slower than estimated so far. In other words, processes that were once believed to occur in a matter of hours could, in reality, take weeks.
Jupiter’s Atmosphere: An Extreme and Unexplored Environment
Jupiter doesn’t have a known solid surface. It’s a gigantic world made up of gases and liquids subjected to extreme pressures and temperatures. Any attempt to penetrate its atmosphere ultimately fails: if a spacecraft were to venture too deep, it would be destroyed by the extreme conditions of the environment. For example, the Galileo probe ceased functioning almost immediately after plunging into the planet’s atmosphere, as noted in a University of Chicago statement.
What has been possible is to study its upper layers from orbit, thanks to missions like Juno. These observations have confirmed the presence of compounds such as ammonia, methane, and carbon monoxide. However, the big unknown remains deeper down, in the depths of the atmosphere, where the oxygen is concentrated, mainly trapped in the form of water.
Jupiter as a Time Capsule of the Solar System
The new model suggests that understanding how these molecules move and transform is key not only to better understanding Jupiter but also to reconstructing the history of the solar system. As Yang explained to Space.com, “planets retain the chemical fingerprints of the environments in which they formed, making them time capsules.”
There is still debate about whether Jupiter was born in the position it occupies today or whether it migrated from more distant regions of the Sun. However, these types of findings help narrow the possibilities. The high amount of oxygen detected supports the idea that the planet formed in colder, more distant zones, where ice was abundant and could be incorporated more easily during its growth. This research could refine our understanding of planetary formation and evolution.
In other words, by deciphering what happens beneath Jupiter’s clouds, scientists not only help clarify one of the great planetary mysteries but also contribute to reconstructing the early chapters of the solar system’s history and, at the same time, guide the search for habitable planets in other star systems.
