From the Vault: The Great Eye of Jupiter, Part 2
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In this vault episode of Stuff to Blow Your Mind, hosts Robert Lamb and Joe McCormick continue their deep dive into Jupiter's Great Red Spot, exploring its scientific mysteries, historical observations, and cultural significance. The episode examines the storm's elusive red color, discussing competing theories ranging from solar-induced chemical reactions (like ammonia and acetylene exposed to UV light) to the speculative idea of Jovian life forms creating algal-like blooms. The hosts also explore the storm's origin, citing a 2024 study that suggests the Great Red Spot likely formed from a South Tropical Disturbance—an instability in Jupiter’s jet streams—rather than merging smaller storms or a massive upwelling. Despite its shrinking size over recent decades, the storm remains a self-sustaining atmospheric feature, though its ultimate fate remains uncertain. The discussion weaves in science fiction references, including Arthur C. Clarke’s 'A Meeting with Medusa' and a dramatic Star Trek Picard finale moment, highlighting how the Red Spot has become a symbol of cosmic mystery and narrative potential.
The Great Red Spot is likely not the same storm observed by Giovanni Cassini in the 17th century, having reappeared in the 1830s after a long disappearance.
The storm’s red color may result from high-altitude chemical reactions—possibly ammonia and acetylene exposed to solar UV radiation—rather than being red throughout its depth.
Recent research suggests the Great Red Spot formed from a South Tropical Disturbance, an instability in Jupiter’s jet streams, not from merging smaller storms or a deep planetary eruption.
While the storm is shrinking, it may persist for decades or longer, and if it vanishes, another great red spot could emerge in its place.
The idea of life in Jupiter’s atmosphere—such as floating, hunting, or sinking organisms—remains speculative but scientifically intriguing, inspired by Carl Sagan and Edwin Salpeter’s 1976 paper.
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The Great Red Spot: From Observation to Speculation
Introduction to the episode's focus on Jupiter’s Great Red Spot, including historical sightings, its appearance in science fiction (notably Arthur C. Clarke’s 'A Meeting with Medusa'), and the philosophical question of whether the storm’s identity changes when experienced from within.
“What if we're looking at algal blooms in certain bands along the surface? Yeah. In a way, it's the more exciting. Well, I mean, I think all these ideas are exciting, but you can imagine where that idea would maybe be that nice mix of exciting and accessible to the average person.”
“The authors conclude this is most likely how the Great Red Spot formed. It was from this unstable wind, uh, wind condition, the South tropical disturbance, uh, the wind flowing from one band into the other and then creating this giant vortex that was self-sustaining and has been self-sustaining for now for more than 190 years.”
“If we lose the current great red spot, it may well be replaced by another spot. Maybe much like the original or like the one we have now. Great red spots come, great red spots go, but I don't know if they're ever a good place to park a spaceship.”
Hosts
Great Red Spot
other
Jupiter
other
Robert Lamb
person
Joe McCormick
person
South Tropical Disturbance
other
Arthur C. Clarke
person
Timbo
person
Giovanni Cassini
person
A Meeting with Medusa
book
Robert Smigel
person
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