I looked at this picture, and being a chemical engineer, it's interesting as to why the gas giant forms 'rings' pararrel in global space to the equator of the planet. It's easily shown that if you spin a perfect sphere within an enclosed sphere, the gas between those two will form patterns as with Jupiter. As you start to 'roughen' the inner sphere, you begin to disrupt those patterns, and you'll get chaos in the patterns. If one could take a similar picture of earth, you'd expect to see the same, no horizontal bands of flow, but more turbulence.
Of course, this effect ebbs as you increases the space between the sphere relative to the amount of roughness of the inner sphere. So (as it's predicted) Jupiter's got an inner core so small relative to the diameter of it's gas size, that any turbulence created just outside of the core will be nullified by the time you hit the visible part of the planet.
But then why does the red spot persist? We've known about it for a couple of centuries, so if it were simply a local disruption from stability, it would have corrected itself by now, but everytime we look at it, it's about the same shape, size, color, and relative placement on the planet. Could there be something just beneath the layer of gases like a small moon that is dense enough to cause the red spot?
I'm sure this questions have been thought of, but space is still the most interesting thing we have to look at nowadays...
--
"Pinky, you've left the lens cap of your mind on again." - P&TB
"I can see my house from here!" - ST:
Re:controversy, yeah sure
by
Mr.+Slippery
·
· Score: 3
Their general opinion was "nukes are bad, m-kay"... but they managed to get a piece on 60 minutes as well.
There were also several more articulate explanations of the dangers involved, such as this or this.
The risk was non-zero, and NASA does not have what I would call a good track record on risk estimation. (See Feyman's tale in "What Do You Care What Other People Think?") Yes, there was ignorance among many who opposed the lauch; there was also plenty of ignorance among many who supported it.
-- Tom Swiss | the infamous tms | my blog You cannot wash away blood with blood
He may have been moderated as funny (and I hope that was his aim) but there are people that actually believe this kind of thing.<br><br>
Speaking of which, why is there no moderation tag called Sad?
Jupiter's gonna be pissed that we got it's bad side. I know from experience that she hates it when we take pics of her *spot*I tried to tell her it's distinguishing, that it gives character, like Cindy Crawford's mole, but she just sat there and expelled gasses and sulked. Bitch. Sharkey Bamf.com
Datalink Flaw in Titan Probe: European Space Agency engineers have
discovered that there is not enough bandwidth in the link between its
Huygens probe and NASA's Cassini spacecraft to handle the Doppler shift
between the two as the ESA probe parachutes toward the surface of Titan,
triggering an inquiry into why the shortfall wasn't discovered before NASA
launched Cassini and Huygens to Saturn and how to get around it now. As it
stands, ESA said, the "probe data relay subsystem" (PDRS) won't be able to
recover all the data generated by Huygens' six instruments as it descends
into the moon's dense atmosphere of nitrogen and methane and settles on the
surface. NASA launched Cassini and Huygens together on Oct. 15, 1997. The
flaw lies in the European receiver aboard Cassini that will receive data
from Huygens. ESA said an end-to-end in-flight test series in February
suggested there was a problem, and extensive ground testing early last month
at ESA's Operations Center (ESOC) in Darmstadt, Germany, confirmed "that the
existing link would not support full data recovery under the currently
planned mission scenario." (Aviation Now)
If you want to find out more about the Cassini-Huygens mission, you should check the NASA web page on the mission. (Was it just me, or was the story as posted need more info?)
Available up a couple of levels here on the jpl site.
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The truth is out th- oh, wait, here it is...
Re:The peak? certainly the furthermost point
by
HeghmoH
·
· Score: 4
Can we replicate the Great Pyramid today? You bet we couldn't. Maybe with a lot of time and more money than God, but then the same holds true for the Saturn V. Could we build a V-2 today? Nope. How about a Titanic? A Fulton steamship?
Here's a good site. I assume you know of the Me-262, the German WWII-era jet fighter. A lot of them were built, and under wartime conditions with heavy bombing from the allies. Now a company in Texas is building some replicas. It's taken them seven years to make just a handful, and they're not done yet. It's still not a perfect copy, since they're using commercially-available engines instead of the original design. The link is here.
Does that mean that the aircraft industry has been in a decline since 1945? Of course not. That would be silly. A modern jet fighter is superior in every concievable way to the Me-262. We can't build a Saturn V. We wouldn't if we could. If we wanted to go to the moon, we'd redo it, with the benefit of thirty more years of experience in space flight, and we'd end up with something better.
As far as our direct reach with human beings is concerned, we have pulled back since 1972. However, we now send something like fifty people a year into orbit. You can launch your own satellite into space without needing enough money to buy a medium-sized country. Our time is coming, not going. Apollo was an amazing achievement, but in the end it was basically a stunt. Soon enough we will have something more significant than just sending two people to the surface for a day.
The math on air travel and satellites was just as horrible when those were impractical as the math on interstellar travel is now. Don't doubt the abilities of your children's children's children's children.
-- Mod down posts with a "Free Mac Mini/iPod" sig, they're spam!
I recall there was a lot of controversy about the Cassini probe, prior to its launch. Most of this concerned its fuel, which I think was plutonium.
The funniest thing I heard about the controversy was when some idiot in the fashion industry called the JPL to complain about using the designer, Cassini's name without permission. The idiot was politely informed the spacecraft was named after a 15th. century astronomer and not the sycophant's boss.
-- I thought I had an appetite for destruction, but all I really wanted was a club sandwich. --Homer J.
Slashdot Mirror
Of course, this effect ebbs as you increases the space between the sphere relative to the amount of roughness of the inner sphere. So (as it's predicted) Jupiter's got an inner core so small relative to the diameter of it's gas size, that any turbulence created just outside of the core will be nullified by the time you hit the visible part of the planet.
But then why does the red spot persist? We've known about it for a couple of centuries, so if it were simply a local disruption from stability, it would have corrected itself by now, but everytime we look at it, it's about the same shape, size, color, and relative placement on the planet. Could there be something just beneath the layer of gases like a small moon that is dense enough to cause the red spot?
I'm sure this questions have been thought of, but space is still the most interesting thing we have to look at nowadays...
"Pinky, you've left the lens cap of your mind on again." - P&TB
"I can see my house from here!" - ST:
There were also several more articulate explanations of the dangers involved, such as this or this.
The risk was non-zero, and NASA does not have what I would call a good track record on risk estimation. (See Feyman's tale in "What Do You Care What Other People Think?") Yes, there was ignorance among many who opposed the lauch; there was also plenty of ignorance among many who supported it.
Tom Swiss | the infamous tms | my blog
You cannot wash away blood with blood
He may have been moderated as funny (and I hope that was his aim) but there are people that actually believe this kind of thing.<br><br>
Speaking of which, why is there no moderation tag called Sad?
Bite my yammer.
Jupiter's gonna be pissed that we got it's bad side. I know from experience that she hates it when we take pics of her *spot*I tried to tell her it's distinguishing, that it gives character, like Cindy Crawford's mole, but she just sat there and expelled gasses and sulked. Bitch. Sharkey
Bamf.com
Datalink Flaw in Titan Probe: European Space Agency engineers have discovered that there is not enough bandwidth in the link between its Huygens probe and NASA's Cassini spacecraft to handle the Doppler shift between the two as the ESA probe parachutes toward the surface of Titan, triggering an inquiry into why the shortfall wasn't discovered before NASA launched Cassini and Huygens to Saturn and how to get around it now. As it stands, ESA said, the "probe data relay subsystem" (PDRS) won't be able to recover all the data generated by Huygens' six instruments as it descends into the moon's dense atmosphere of nitrogen and methane and settles on the surface. NASA launched Cassini and Huygens together on Oct. 15, 1997. The flaw lies in the European receiver aboard Cassini that will receive data from Huygens. ESA said an end-to-end in-flight test series in February suggested there was a problem, and extensive ground testing early last month at ESA's Operations Center (ESOC) in Darmstadt, Germany, confirmed "that the existing link would not support full data recovery under the currently planned mission scenario." (Aviation Now)
If you want to find out more about the Cassini-Huygens mission, you should check the NASA web page on the mission. (Was it just me, or was the story as posted need more info?)
P.S. Can anybody figure out why the links on the Challenging 1/37th paper model of Cassini seem to be broken? I want to build one of these puppies!
Available up a couple of levels here on the jpl site.
-------------
-------------
The truth is out th- oh, wait, here it is...
Can we replicate the Great Pyramid today? You bet we couldn't. Maybe with a lot of time and more money than God, but then the same holds true for the Saturn V. Could we build a V-2 today? Nope. How about a Titanic? A Fulton steamship?
Here's a good site. I assume you know of the Me-262, the German WWII-era jet fighter. A lot of them were built, and under wartime conditions with heavy bombing from the allies. Now a company in Texas is building some replicas. It's taken them seven years to make just a handful, and they're not done yet. It's still not a perfect copy, since they're using commercially-available engines instead of the original design. The link is here.
Does that mean that the aircraft industry has been in a decline since 1945? Of course not. That would be silly. A modern jet fighter is superior in every concievable way to the Me-262. We can't build a Saturn V. We wouldn't if we could. If we wanted to go to the moon, we'd redo it, with the benefit of thirty more years of experience in space flight, and we'd end up with something better.
As far as our direct reach with human beings is concerned, we have pulled back since 1972. However, we now send something like fifty people a year into orbit. You can launch your own satellite into space without needing enough money to buy a medium-sized country. Our time is coming, not going. Apollo was an amazing achievement, but in the end it was basically a stunt. Soon enough we will have something more significant than just sending two people to the surface for a day.
The math on air travel and satellites was just as horrible when those were impractical as the math on interstellar travel is now. Don't doubt the abilities of your children's children's children's children.
Mod down posts with a "Free Mac Mini/iPod" sig, they're spam!
I hate to be a karma whore, but here's a link to information on cassini
Cassini info
It's energy esource?
http://www.ametsoc.org/AMS/newsltr/nl_03_00.html
I've been trying to dig up an article I read about how something like this was caused to form naturally. No luck so far, but I suspect it may have been this researcher's project.
http://www.coaps.fsu.edu/~meyers/fig/vortex.html
-- perl -e'print pack"H*","6e656d6f406d38792e6f7267"'
I recall there was a lot of controversy about the Cassini probe, prior to its launch. Most of this concerned its fuel, which I think was plutonium.
The funniest thing I heard about the controversy was when some idiot in the fashion industry called the JPL to complain about using the designer, Cassini's name without permission. The idiot was politely informed the spacecraft was named after a 15th. century astronomer and not the sycophant's boss.
I thought I had an appetite for destruction, but all I really wanted was a club sandwich. --Homer J.