Bozo Erectus
Master Baker
- Joined
- Jan 22, 2003
- Messages
- 22,389
http://www.space.com/scienceastronomy/070327_saturn_hex.htmlOne 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.
Really interesting story, from a number of angles. The one that interests me in particular is this: If from an orbiting satellite we spotted a large perfectly hexagonal structure on the Earths surface, any scientist who tried to explain it as being formed by natural geologic processes would be laughed out of the room, down the hall, and out into the street. But because its not on Earth, the same treatment would be given to anyone who proposed that it was made by someone or something, by some means and technology unknown to us at this time. I already know that virtually everyone here will automatically conclude its a natural phenomenon, but Id like to hear some explanations as to how that could be. The laws of physics are the same on Saturn as on Earth, right? So why isnt this a textbook example of humanity stumbling across evidence of non human intelligence out there in space, and not recognizing it for what it is?
Disclaimer: I dont know what the heck it is. Im not, I repeat, Im not stating that this IS an artificial creation of floating sentient gasbags who live in Saturns atmosphere, and who are sending a signal saying "Psst! We're here!" But Id like to hear the reasoning of those who know that it isnt.