Posted on 03/27/2007 11:10:24 AM PDT by anymouse
One of the most bizarre weather patterns known has been photographed at Saturn, where astronomers have spotted a huge, six-sided feature circling the north pole.
Rather than the normally sinuous cloud structures seen on all planets that have atmospheres, this thing is a hexagon.
The honeycomb-like feature has been seen before. NASA's Voyager 1 and 2 spacecraft imaged it more than two decades ago. Now, having spotted it with the Cassini spacecraft, scientists conclude it is a long-lasting oddity.
"This is a very strange feature, lying in a precise geometric fashion with six nearly equally straight sides," said Kevin Baines, atmospheric expert and member of Cassini's visual and infrared mapping spectrometer team at NASA's Jet Propulsion Laboratory, Pasadena, Calif. "We've never seen anything like this on any other planet. Indeed, Saturn's thick atmosphere, where circularly-shaped waves and convective cells dominate, is perhaps the last place you'd expect to see such a six-sided geometric figure, yet there it is."
The hexagon is nearly 15,000 miles (25,000 kilometers) across. Nearly four Earths could fit inside it. The thermal imagery shows the hexagon extends about 60 miles (100 kilometers) down into the clouds.
At Saturn's south pole, Cassini recently spotted a freaky human eye-like feature that resembles a hurricane.
"It's amazing to see such striking differences on opposite ends of Saturn's poles," said Bob Brown, team leader of the Cassini visual and infrared mapping spectrometer at the University of Arizona. "At the south pole we have what appears to be a hurricane with a giant eye, and at the north pole of Saturn we have this geometric feature, which is completely different."
The hexagon appears to have remained fixed with Saturn's rotation rate and axis since first glimpsed by Voyager 26 years ago. The actual rotation rate of Saturn is still uncertain, which means nobody knows exactly how long the planet's day is.
"Once we understand its dynamical nature, this long-lived, deep-seated polar hexagon may give us a clue to the true rotation rate of the deep atmosphere and perhaps the interior," Baines said.
It's a thermal image.
This IR squared...
Actually it was a loaves and fishes thingy...the spaghetti and meatballs expanded to sustain TENS of people!! yikes....COME ON OVER!
141 posts. Probably too late for a classygreeneyedblonde post.
That is amazing all formed naturally by the earth?</p>
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Get that nut off of my thread!
Benzene is a natural constituent of crude oil, but it is usually synthesized from other compounds present in petroleum. Benzene is an aromatic hydrocarbon...
manna on Saturn?
Interesting, thanks for pinging Dave!
I think i'm gonna cry I'm laughing so hard.
Then again, he may be onto something.... ;o)
LOL!!!
Meanwhile, the postal monopoly is painting at least some of its rectangular postal boxes to appear like R2D2, while offering this commemorative stamp set:
http://www.USPSJediMaster.com
That's the retainer nut.
Of potential interest:
http://www.cnn.com/2007/TECH/space/03/28/china.russia.space.reut/index.html
Agree that this "hexagon" isn't very impressive, especially with geological features such as the Giant's Causeway here on Earth.
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