Science

NASA has photographed a pearly white storm on Jupiter that's nearly as big as Earth

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Massive storms whirl their way across the surface of Jupiter, the planet so massive that its gravity pulls at the sun, affecting its orbit.

The most famous of these is the mysterious Great Red Spot, a storm twice as wide as Earth that has been going on for at least 150 years, perhaps longer. But on the southern hemisphere of the gas giant, another series of eight storms that appear like white circles or ovals — known as the "string of pearls" — rage away, rotating counterclockwise.

In the image below, shot by the JunoCam imager on NASA's Juno spacecraft on its third close flyby of Jupiter, you can see the seventh of those eight "pearls."

PIA21219_hires Juno Jupiter
This image, taken by the JunoCam imager on NASA's Juno spacecraft, highlights the seventh of Jupiter's eight 'string of pearls' — massive counterclockwise rotating storms that appear as white ovals in the gas giant's southern hemisphere.  NASA/JPL-Caltech/SwRI/MSSS

Since 1986, there have been between six and nine of these storms — at least that's how many have been visible.

The image above, shot at 12:27 EST on December 11, is just part of the data that's now streaming in from the Juno mission.

Juno was about 15,300 miles from Jupiter — which is about 600 million miles from Earth — when it took this shot, according to a JPL press release.

The JunoCam is primarily designed for public engagement, but Juno itself is a fascinating and difficult mission that will likely revolutionize our understanding of the planet.

Few spacecraft have gotten or will ever get as close to Jupiter.

During its jam-packed year-long mission, the probe will dive through the planet's clouds, "taste" the radiation belts, take photos, record beautiful polar auroras, and round up clues that might reveal what Jupiter's core is made of — and if it's solid at its core.

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Kevin was a correspondent covering science and health for Business Insider. He covered climate and the environment, infectious disease, the limits of human performance, and more.  He wrote four stories for Business Insider's "Saving our World" series, covering the steps humanity will have to take to adapt to the effects of climate change, the ways rising seas will affect cities like Miami, how scientists are devising ways to bring coral reefs back to life, and potential last-ditch geoengineering efforts. He covered ways that fasting could potentially slow aging and fight disease. He wrote a Tech Insider feature profiling a scientist who thinks he could have a cure for all viruses: This man's potentially huge medical breakthrough can't get funding, so he's trying something desperate. He also wrote a launch feature for Tech Insider on the ways humans are using new genetic editing tools to reshape our world: The age of genetically engineered animals has arrived. At Business Insider, he wrote one of the first stories investigating the blood-testing startup Theranos: Scientists are skeptical about the secret blood test that has made Elizabeth Holmes a billionaire. Before Business Insider, he studied health and science writing at the CUNY Graduate School of Journalism. Before that, he earned a B.A. in political science and philosophy from the University of Notre Dame. He spent several years traveling and has written for Condé Nast Traveler, The Christian Science Monitor, and other publications.
Dave Mosher reported news and features stories about science and technology for Insider, with human and robotic spaceflight as the primary focus of his multimedia storytelling. Mosher joined Insider in April 2015 as a deputy editor to help launch Tech Insider and manage its science desk. He left the company in February 2021. Prior to being an Insider, Mosher directed Popular Science's website, was a Wired contributor, and worked for or with Scientific American, Popular Mechanics, Discover, Space.com, National Geographic News, Discovery Channel, Nature, Science, and other media outlets.