weird hexagon at Saturn's north pole
Mar. 28th, 2007 10:25 am
How is this for odd? At the north pole of Saturn the clouds form a hexagonal structure big enough to fit almost 4 Earths inside. Nobody is sure how this kind of shape can be produced by clouds. At Saturn's south pole there is the normal circular storm pattern everyone would expect.This hexagonal shape is not new -- it was first seen by the little Voyager space robot when it flew past 26 years ago, in the early 1980s, and it isn't superficial either, these cloud patterns extend down about 75 kilometers (47 miles). Although the clouds race around the edges of the hexagon, the hexagon itself doesn't appear to rotate... odder and odder.
This image is taken in infrared because it is currently winter at that pole, so it is enshrouded in night.
You can read more at http://www.nasa.gov/mission_pages/cassini/multimedia/pia09188.html
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Date: 2007-03-28 12:36 am (UTC)no subject
Date: 2007-03-28 01:05 am (UTC)I think it's wonderful that there are still so many unsolved mysteries in our own back yard like this.
It's so hard to imagine something being 4 times the size of the Earth - things on that scale are just pointless to try and visualise :)
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Date: 2007-03-28 04:26 am (UTC):)
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Date: 2007-03-28 04:33 am (UTC)I think of the "almost 4 Earths" thing like this: I remember the photos of our beautiful blue marble taken from space by astronauts and space robots, and I imagine us all living out our lives and some of us travelling for the best part of a day in high-speed jet aircraft halfway around that little globe... then I imagine a hole almost big enough to fit 4 of them in... and I think to myself... "Wow!"
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Date: 2007-03-28 04:37 am (UTC)no subject
Date: 2007-03-28 03:36 pm (UTC)(And actually would make a pretty cool setting for a science fiction novel/comic/game.)
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Date: 2007-03-28 11:09 pm (UTC)I adore what the internet has done in connecting space exploration with buffs around the world. I remember in the '80s I'd be reading books about "the latest" in space exploration, which had actually taken place the decade before!
Ah, Voyager, Viking, Mariner et al. Fond memories. I can still smell the pages with the full colour glossy images of the boring-as-hell martian landscape :)
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Date: 2007-03-28 11:10 pm (UTC)Who put a hex on Saturn
Date: 2007-06-05 01:45 pm (UTC)Re: Who put a hex on Saturn
Date: 2007-06-07 01:05 am (UTC)