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Saturn's F Ring Is Now Three Times As Wide As During the Voyager Flybys

Slashdot - Mon, 01/09/2014 - 1:13pm
KentuckyFC writes In 1980 and 1981, Voyager 1 and 2 flew past Saturn providing unprecedented images of its magnificent ring system. At that time, its most distant discrete ring, the F ring, was about 200 kilometres wide. But puzzlingly, images sent back by Cassini show that the ring is now 580 kilometres wide and twice as bright as it was thirty years ago. Now astronomers think they have finally solved the mystery of the expanding F ring. The ring is shepherded by a number of small moons, the most famous of which is Prometheus. These moons interact gravitationally with the ring creating structures such as braids and spokes. The new thinking is that the moons' orbits resonate with the F ring, pushing clouds of dust and ice further away from Saturn. This makes the ring wider. But beyond a certain radius the orbit of the dust becomes unstable and it begins to spiral back towards Saturn and collides with the rest of the ring. This causes a chain reaction of collisions that dramatically increases the number of particles in the ring and hence its brightness. This theory also leads to a prediction--the resonant process is currently at a maximum but should reduce sharply in the coming years, if the theory is correct. So by 2018, the F ring should be back to the same configuration the Voyagers saw in 80/81.

Read more of this story at Slashdot.








Saturn's F Ring Is Now Three Times As Wide As During the Voyager Flybys

Slashdot - Mon, 01/09/2014 - 1:13pm
KentuckyFC writes In 1980 and 1981, Voyager 1 and 2 flew past Saturn providing unprecedented images of its magnificent ring system. At that time, its most distant discrete ring, the F ring, was about 200 kilometres wide. But puzzlingly, images sent back by Cassini show that the ring is now 580 kilometres wide and twice as bright as it was thirty years ago. Now astronomers think they have finally solved the mystery of the expanding F ring. The ring is shepherded by a number of small moons, the most famous of which is Prometheus. These moons interact gravitationally with the ring creating structures such as braids and spokes. The new thinking is that the moons' orbits resonate with the F ring, pushing clouds of dust and ice further away from Saturn. This makes the ring wider. But beyond a certain radius the orbit of the dust becomes unstable and it begins to spiral back towards Saturn and collides with the rest of the ring. This causes a chain reaction of collisions that dramatically increases the number of particles in the ring and hence its brightness. This theory also leads to a prediction--the resonant process is currently at a maximum but should reduce sharply in the coming years, if the theory is correct. So by 2018, the F ring should be back to the same configuration the Voyagers saw in 80/81.

Read more of this story at Slashdot.








Saturn's F Ring Is Now Three Times As Wide As During the Voyager Flybys

Slashdot - Mon, 01/09/2014 - 1:13pm
KentuckyFC writes In 1980 and 1981, Voyager 1 and 2 flew past Saturn providing unprecedented images of its magnificent ring system. At that time, its most distant discrete ring, the F ring, was about 200 kilometres wide. But puzzlingly, images sent back by Cassini show that the ring is now 580 kilometres wide and twice as bright as it was thirty years ago. Now astronomers think they have finally solved the mystery of the expanding F ring. The ring is shepherded by a number of small moons, the most famous of which is Prometheus. These moons interact gravitationally with the ring creating structures such as braids and spokes. The new thinking is that the moons' orbits resonate with the F ring, pushing clouds of dust and ice further away from Saturn. This makes the ring wider. But beyond a certain radius the orbit of the dust becomes unstable and it begins to spiral back towards Saturn and collides with the rest of the ring. This causes a chain reaction of collisions that dramatically increases the number of particles in the ring and hence its brightness. This theory also leads to a prediction--the resonant process is currently at a maximum but should reduce sharply in the coming years, if the theory is correct. So by 2018, the F ring should be back to the same configuration the Voyagers saw in 80/81.

Read more of this story at Slashdot.








Saturn's F Ring Is Now Three Times As Wide As During the Voyager Flybys

Slashdot - Mon, 01/09/2014 - 1:13pm
KentuckyFC writes In 1980 and 1981, Voyager 1 and 2 flew past Saturn providing unprecedented images of its magnificent ring system. At that time, its most distant discrete ring, the F ring, was about 200 kilometres wide. But puzzlingly, images sent back by Cassini show that the ring is now 580 kilometres wide and twice as bright as it was thirty years ago. Now astronomers think they have finally solved the mystery of the expanding F ring. The ring is shepherded by a number of small moons, the most famous of which is Prometheus. These moons interact gravitationally with the ring creating structures such as braids and spokes. The new thinking is that the moons' orbits resonate with the F ring, pushing clouds of dust and ice further away from Saturn. This makes the ring wider. But beyond a certain radius the orbit of the dust becomes unstable and it begins to spiral back towards Saturn and collides with the rest of the ring. This causes a chain reaction of collisions that dramatically increases the number of particles in the ring and hence its brightness. This theory also leads to a prediction--the resonant process is currently at a maximum but should reduce sharply in the coming years, if the theory is correct. So by 2018, the F ring should be back to the same configuration the Voyagers saw in 80/81.

Read more of this story at Slashdot.








Saturn's F Ring Is Now Three Times As Wide As During the Voyager Flybys

Slashdot - Mon, 01/09/2014 - 1:13pm
KentuckyFC writes In 1980 and 1981, Voyager 1 and 2 flew past Saturn providing unprecedented images of its magnificent ring system. At that time, its most distant discrete ring, the F ring, was about 200 kilometres wide. But puzzlingly, images sent back by Cassini show that the ring is now 580 kilometres wide and twice as bright as it was thirty years ago. Now astronomers think they have finally solved the mystery of the expanding F ring. The ring is shepherded by a number of small moons, the most famous of which is Prometheus. These moons interact gravitationally with the ring creating structures such as braids and spokes. The new thinking is that the moons' orbits resonate with the F ring, pushing clouds of dust and ice further away from Saturn. This makes the ring wider. But beyond a certain radius the orbit of the dust becomes unstable and it begins to spiral back towards Saturn and collides with the rest of the ring. This causes a chain reaction of collisions that dramatically increases the number of particles in the ring and hence its brightness. This theory also leads to a prediction--the resonant process is currently at a maximum but should reduce sharply in the coming years, if the theory is correct. So by 2018, the F ring should be back to the same configuration the Voyagers saw in 80/81.

Read more of this story at Slashdot.








Saturn's F Ring Is Now Three Times As Wide As During the Voyager Flybys

Slashdot - Mon, 01/09/2014 - 1:13pm
KentuckyFC writes In 1980 and 1981, Voyager 1 and 2 flew past Saturn providing unprecedented images of its magnificent ring system. At that time, its most distant discrete ring, the F ring, was about 200 kilometres wide. But puzzlingly, images sent back by Cassini show that the ring is now 580 kilometres wide and twice as bright as it was thirty years ago. Now astronomers think they have finally solved the mystery of the expanding F ring. The ring is shepherded by a number of small moons, the most famous of which is Prometheus. These moons interact gravitationally with the ring creating structures such as braids and spokes. The new thinking is that the moons' orbits resonate with the F ring, pushing clouds of dust and ice further away from Saturn. This makes the ring wider. But beyond a certain radius the orbit of the dust becomes unstable and it begins to spiral back towards Saturn and collides with the rest of the ring. This causes a chain reaction of collisions that dramatically increases the number of particles in the ring and hence its brightness. This theory also leads to a prediction--the resonant process is currently at a maximum but should reduce sharply in the coming years, if the theory is correct. So by 2018, the F ring should be back to the same configuration the Voyagers saw in 80/81.

Read more of this story at Slashdot.








XBMC/Kodi 14 Is Going To Be Mostly About Cleaning Up

Phoronix - Mon, 01/09/2014 - 1:11pm
XBMC, which renamed itself to Kodi, is out with a new alpha release for the Kodi 14 media center software. While XBMC 13 introduced a lot of new features, Kodi 14 is going to be mostly about minor refinements...

No flogging, please, we're Apple: Health app makers FORBIDDEN to sell users' info

El Reg - Mon, 01/09/2014 - 1:04pm
DEVELOPERS, DEVELOPERS ... REGULATORS

Apple is expected to unveil new products which will use the latest version of its iOS operating system, including new iPhones, at an event on 9 September. But mobile app developers – who've already had their hands on the mobile OS since June – will be prevented from making sensitive user data available to third parties on "HealthKit" platform..…

Microsoft refuses US warrant, hangs on to overseas user emails

L'Inq - Mon, 01/09/2014 - 12:59pm

Will not yield while it appeals


Microsoft & AMD Release C++ AMP Compiler With Linux Support

Phoronix - Mon, 01/09/2014 - 12:57pm
AMD and Microsoft jointly released C++ AMP version 1.2 compiler that supports Linux alongside Windows. Ubuntu is the officially supported distribution at this time...

Never mind the iPhone 6: Apple must explain iCloud hack debacle

Thinq - Mon, 01/09/2014 - 12:40pm

Cupertino is surely busy with the iPhone, but it needs to step in and explain what is going on with the alleged hack of iCloud and spillage of nude celebrity pics, if only to deny involvement.

Read more: http://www.itproportal.com/2014/09/01/never-mind-the-iphone-6-apple-must-explain-icloud-hack-debacle/

Google has spaffed more cash on lobbying this year than Big Cable

El Reg - Mon, 01/09/2014 - 12:36pm
Don't worry, it'll be cheaper when they use drones

Google has single-handedly outspent Big Cable in terms of lobbying dollars so far in 2014.…

iPhone 6 release date, price and specs

L'Inq - Mon, 01/09/2014 - 12:30pm

Everything you need to know about Apple's 2014 flagship smartphone


Flawed instructions caused EU Galileo satellite launch error

L'Inq - Mon, 01/09/2014 - 12:15pm

European Space Agency says the satellites are under control, but off course


The Passenger Pigeon: A Century of Extinction

Slashdot - Mon, 01/09/2014 - 12:13pm
An anonymous reader writes On September 1, 1914, Martha, the last passenger pigeon was found dead in her aviary at the Cincinnati Zoo. When the first European settlers arrived in North America at least one of every four birds on the continent was a passenger pigeon, making them the most numerous birds in North America, and perhaps in the world. From the article: "But extinction apparently doesn't ring with the finality it used to. Researchers are working to 'de-extinct' the bird. They got their hands on some of the 1,500 or so known passenger pigeon specimens and are hoping to resurrect the species through some Jurassic Park-like genetic engineering. Instead of using frog DNA to fill out the missing parts of a dinosaur's genetic code as in Michael Crichton's story, the real-life 'bring-back-the-passenger pigeon' researchers are using the bird's closest relative, the band-tailed pigeon.

Read more of this story at Slashdot.








Wonderful wizard of WOS daddy DDN moves into big data

El Reg - Mon, 01/09/2014 - 12:02pm
We're talking profits, baby

Comment  HPC and supercomputer storage company Data Direct Networks (DDN) says its move into enterprise big data is providing a bridge to profits, with 100 per cent revenue growth.…

Second hacking crew joins Syrian Electronic Army on Team Assad

El Reg - Mon, 01/09/2014 - 11:42am
Malware Team might even be an offshoot, say researchers

A second hacking crew has weighed into the conflict in Syria on the side of embattled Syrian president Bashar al-Assad.…

Toshiba aims budget Satellite Pro R50-B at growing SMBs

L'Inq - Mon, 01/09/2014 - 11:37am

Enterprise-grade laptop for £299


Chumps stump up $1 MEELLLION for watch that doesn't exist

El Reg - Mon, 01/09/2014 - 11:18am
By the way, I have a really nice bridge you might like...

An Indiegogo project to build a watch that projects its display onto your hand has blown the doors off its target by raising a million dollars in funding – even though no functional device has yet been built.…

Finally there is a slight rise in Windows 8.1 use, as Windows XP dips

L'Inq - Mon, 01/09/2014 - 11:11am

But before we get too excited, it's still a teeny tiny increase


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