Saturn’s Mysterious Hexagon Behaves Like Earth’s Ozone Hole

by Elizabeth Howell on December 5, 2013

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At Saturn, NASA's Cassini spacecraft snapped pictures showing a high-resolution view of a hexagon-shaped jet stream. Credit: NASA/JPL-Caltech/SSI/Hampton

At Saturn, NASA’s Cassini spacecraft snapped pictures showing a high-resolution view of a hexagon-shaped jet stream. Credit: NASA/JPL-Caltech/SSI/Hampton

A raging hurricane is creating a “suck zone” at Saturn’s north pole. The handy Cassini spacecraft recently captured a bunch of images of the six-sided jet stream surrounding the storm, which mission managers then put together into an awesome animation showing the wind currents shifting. (You can see the animation below the jump.)

The feature is pretty in a picture, but NASA has a special interest because there is nothing else like this anywhere in our solar system, the agency stated. The immense storm stretches 20,000 miles (30,000 kilometers) across with winds whipping in its jet stream at 200 miles per hour (322 kilometers per hour). And despite all the turbulence, the storm is staying put at the north pole for reasons scientists are still trying to understand.

“The hexagon is just a current of air, and weather features out there that share similarities to this are notoriously turbulent and unstable,” said Andrew Ingersoll, a Cassini imaging team member at the California Institute of Technology in Pasadena. “A hurricane on Earth typically lasts a week, but this has been here for decades — and who knows — maybe centuries.”

An animation of Cassini Saturn images showing a hexagonal jet stream surrounding a storm at the north pole. Credit: NASA/JPL-Caltech/SSI/Hampton University

An animation of Cassini Saturn images showing a hexagonal jet stream surrounding a storm at the north pole. Credit: NASA/JPL-Caltech/SSI/Hampton University

Cassini has been orbiting Saturn since 2004, but it’s only since last year that it’s been able to peer at the hexagon with much success. That’s because the angle of the sun is finally favorable to peer at the storm. This has allowed scientists, for example, to look at the types of particles inside. They discovered that the jet stream is a sort of barrier around the storm, delineating a location with a lot of small haze particles and few large haze particles. (It’s the opposite outside of the jet stream). Scientists said it looks like the Antarctic ozone hole on Earth.

“The Antarctic ozone hole forms within a region enclosed by a jet stream with similarities to the hexagon,” NASA stated.

“Wintertime conditions enable ozone-destroying chemical processes to occur, and the jet stream prevents a resupply of ozone from the outside. At Saturn, large aerosols cannot cross into the hexagonal jet stream from outside, and large aerosol particles are created when sunlight shines on the atmosphere. Only recently, with the start of Saturn’s northern spring in August 2009, did sunlight begin bathing the planet’s northern hemisphere.”

Should Cassini have enough funding to function for a few more years, scientists are eager to watch as Saturn gets to its summer solstice in 2017 and the lighting gets even better around the north pole.

NASA also held an interesting Google+ Hangout yesterday (Nov. 4) about Saturn and the Cassini mission that featured Carolyn Porco, director of the Cassini Imaging Team and the Cassini Imaging Central Laboratory for Operations (CICLOPS). The whole video below is worth a watch, but here’s a little tidbit to let you know some of what was talked about:

“If you took all the mass of Saturn’s rings and recomposed it into a moon, it would be no bigger than Enceladus, so it’s a big spectacle coming from little mass,” Porco said. “The main rings are very thin, only about 30 feet [9 meters] thick, no bigger than about 2 stories in a modern day building. Despite the fact they are about 280,000 km [174,000 miles] across.”

About 

Elizabeth Howell is the senior writer at Universe Today. She also works for Space.com, Space Exploration Network, the NASA Lunar Science Institute, NASA Astrobiology Magazine and LiveScience, among others. Career highlights include watching three shuttle launches, and going on a two-week simulated Mars expedition in rural Utah. You can follow her on Twitter @howellspace or contact her at her website.

Prism2Spectrum December 8, 2013 at 11:47 AM

A video excerpts that resonated ( quotations – 18:19… ):

Discussing the “Pale Blue Dot” image, and her desire to create a better photo of Earth from distant perspective, Ms. Carolyn Porco said, regarding the recent portrait of Earth taken from Saturn ( “The Day the Earth Smiled” ), she wanted people to “go out, look up, and with an acute sense of awareness, contemplate their cosmic whereabouts. Think about the utter isolation of the Earth in the never-ending blackness of space. Marvel [ at ] the beauty, rarity of our Planet, among all the planets of the Sun. Appreciate the lushness, and the life on [ it ]. And marvel at their own existence. And also, appreciate and contemplate the magnitude of the accomplishment: the technological and scientific accomplishment that made this interplanetary salute between robot and maker possible.”

One sample comment she read, from “Tess” ( location unknown ): “At the appropriate time, I left the table at a restaurant, and I went to the parking lot. I turned my face to the sky, and I spent a few minutes watching and listening to what life on Earth was like—right there, right at that moment—knowing that millions of miles away, a spacecraft was turning its lens towards our amazing Planet and taking photos. What a feeling of connection and oneness with the miracle that is life on Earth. This experience was beyond me. It was transcendent. What a beautiful thing.” [ And what a beautiful thought. ]

Ms Porco believes the image represents the very best humanity has to offer. “Because we are known…[ ? ]…warlike inhabitants of one tiny little dot of a planet. But it serves us well, to always remember: We are also the seekers, and the thinkers, and the explorers who took this picture. One World, clear across interplanetary space… And to be that small, and reach so far, is in the end what makes us the extraordinary citizens of Planet Earth.”

http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA17172

Prism2Spectrum December 8, 2013 at 11:47 AM

A video excerpts that resonated ( quotations – 18:19… ):

Discussing the “Pale Blue Dot” image, and her desire to create a better photo of Earth from distant perspective, Ms. Carolyn Porco said, regarding the recent portrait of Earth taken from Saturn ( “The Day the Earth Smiled” ), she wanted people to “go out, look up, and with an acute sense of awareness, contemplate their cosmic whereabouts. Think about the utter isolation of the Earth in the never-ending blackness of space. Marvel [ at ] the beauty, rarity of our Planet, among all the planets of the Sun. Appreciate the lushness, and the life on [ it ]. And marvel at their own existence. And also, appreciate and contemplate the magnitude of the accomplishment: the technological and scientific accomplishment that made this interplanetary salute between robot and maker possible.”

One sample comment she read, from “Tess” ( location unknown ): “At the appropriate time, I left the table at a restaurant, and I went to the parking lot. I turned my face to the sky, and I spent a few minutes watching and listening to what life on Earth was like—right there, right at that moment—knowing that millions of miles away, a spacecraft was turning its lens towards our amazing Planet and taking photos. What a feeling of connection and oneness with the miracle that is life on Earth. This experience was beyond me. It was transcendent. What a beautiful thing.” [ And what a beautiful thought. ]

Ms Porco believes the image represents the very best humanity has to offer. “Because we are known…[ ? ]…warlike inhabitants of one tiny little dot of a planet. But it serves us well, to always remember: We are also the seekers, and the thinkers, and the explorers who took this picture. One World, clear across interplanetary space… And to be that small, and reach so far, is in the end what makes us the extraordinary citizens of Planet Earth.”

http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA17172

King Of Hate December 8, 2013 at 1:52 PM

Ms Porco is a moron. Obviously homosexuals are only 2% of the population yet commit 30% of the molestations and spread 63% of the HIV.

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