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Scientists reconstruct the Pioneer spacecraft anomaly
scientific american ^ | April 15, 2008 | JR Minkel

Posted on 09/24/2010 9:55:18 PM PDT by BenLurkin

Ten years ago, NASA researchers discovered that the Pioneer 10 and 11 spacecraft had fallen slightly behind course during their 35-year journeys to the outer reaches of the solar system. In what has become known as the Pioneer anomaly, which was the subject of one of the talks this weekend at the American Physical Society here in St. Louis, nobody knows for sure why it happened. It probably stemmed from leaking gas or heat.

But there's also the possibility, however remote, that gravity doesn't behave the way we expect. Until recently, researchers haven't had the data to distinguish the different possibilities. That changed in 2006, when NASA physicist Slava Turyshev, a co-discoverer of the anomaly, was visiting a colleague at the NASA Ames Research Center. The Moffett Field, Calif.–facility was about to throw out hundreds of magnetic disks containing the Pioneer telemetric data—temperature and power readings that the twin craft had sent back to NASA once every few minutes until they traveled out of range. (NASA finally lost contact with Pioneer 10 in 2003, after 31 years. It had lost contact with Pioneer 11 in 1995.)

Turyshev and his colleagues rescued the data, and Viktor Toth, a computer programmer in Ottawa, Ontario, volunteered to write brand new code that extracted the telemetry readings from the raw 1s and 0s encoded in the magnetic disks.

A group of some 50 researchers, including Turyshev, is now trying to match the data to a detailed computer model of the craft's inner workings. The model is designed to mimic the flow of heat and electricity produced by the craft's generators, which harnessed the heat from radioactive plutonium and turned a fraction of it into electricity to power the craft.

(Excerpt) Read more at scientificamerican.com ...


TOPICS: Astronomy; Science
KEYWORDS: anomaly; astronomy; catastrophism; nasa; pioneer; pioneer10; pioneer11; pioneeranomaly; reconstruct; science; scientists; slavaturyshev; space; spacecraft; spaceflight; spacetravel; thomasvanflandern; tomvanflandern; viktortoth; xplanets

1 posted on 09/24/2010 9:55:19 PM PDT by BenLurkin
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To: BenLurkin

I wanna hear the explanation for the v y ger anomoly.


2 posted on 09/24/2010 10:00:19 PM PDT by mamelukesabre (Si Vis Pacem Para Bellum (If you want peace prepare for war))
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To: mamelukesabre

Women with shaved heads and funny accents.


3 posted on 09/24/2010 10:01:08 PM PDT by BenLurkin (This post is not a statement of fact. It is merely a personal opinion -- or humor -- or both.)
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To: BenLurkin
Moslem Scientists reconstruct the Pioneer spacecraft anomaly scientific american ^ | April 15, 2008 |

Ten years ago, NASA researchers discovered that the Pioneer 10 and 11 spacecraft had fallen slightly behind course during their 35-year journeys to the outer reaches of the solar system, due to the extra weight of 72 Moslem virgins hiding in the wheelwells.

4 posted on 09/24/2010 10:02:07 PM PDT by bunkerhill7
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To: bunkerhill7

http://www.johnspeedie.com/healy/campanis.wav


5 posted on 09/24/2010 10:04:25 PM PDT by BenLurkin (This post is not a statement of fact. It is merely a personal opinion -- or humor -- or both.)
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To: BenLurkin
 
 
Stunning that those craft put in the performance that they have - horrifying that information from those historic flights was going to get thrown "out" like discarded candy wrappers. What the hell - that's some priceless info.
 
 

6 posted on 09/24/2010 10:04:58 PM PDT by lapsus calami (What's that stink? Code Pink ! ! And their buddy Murtha, too!)
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To: BenLurkin

bflr


7 posted on 09/24/2010 10:07:09 PM PDT by Captain Beyond (The Hammer of the gods! (Just a cool line from a Led Zep song))
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To: BenLurkin

do they like men? this could be HUGE!


8 posted on 09/24/2010 10:12:29 PM PDT by mamelukesabre (Si Vis Pacem Para Bellum (If you want peace prepare for war))
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To: BenLurkin
Lots of jealousy out regarding Einstein. They are always proven wrong yet they never give up. I would love to see the compromise.
9 posted on 09/24/2010 10:24:38 PM PDT by allmost
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To: lapsus calami
Those spacecraft have been bombarded by galactice crap since the day they left our planet. It's no wonder they're slowing down. The mathemeticians make the mistake of thinking that space is empty.

It isn't. Their math doesn't take all of the factors into account, hence it's wrong.There's nothing that's inexplicable here.

10 posted on 09/24/2010 10:29:36 PM PDT by Lurker (The avalanche has begun. The pebbles no longer have a vote.)
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To: BenLurkin
So the space craft are moving slower then expect out from the solar system then what they would expect from gravity alone …in effect the have a very slight drag "head wind"…

Well space is not a pure vacuum ..it is full of gas and debris

And the solar system gravity would be pulling all that gas and debris INWARDS to the solar system…

In effect creating a very slight gas and debris “head wind” the outgoing spacecraft would be flying in to

So you cannot calculate the drag of solar system gravity alone on anything outbound... you would have to account for gas and debris being drawn in to the solar system causing a gas and debris “head wind” …

And the amount of gas and debris in that “head wind” is an unknown variable

11 posted on 09/24/2010 10:47:19 PM PDT by tophat9000 (.............................. BP + BO = BS ...........................Formula for a disaster...)
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To: BenLurkin

Just no place to store a few disks of boring irreplaceable data acquired over thirty years at a cost of hundreds of millions of dollars.

Might as well go along with Obama and sh—can NASA.

All empires die.


12 posted on 09/24/2010 10:52:43 PM PDT by UnbelievingScumOnTheOtherSide (REPEAL OR REBEL! -- Islam Delenda Est! -- I Want Constantinople Back. -- Rumble thee forth.)
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To: BenLurkin

So, our government can spend billions of $$$ to explore space, but can’t come up with the cost of physical storage for some hard disks of information that was collected from their breakthrough experiments??

How screwed up is that????


13 posted on 09/24/2010 11:11:47 PM PDT by Noob1999
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To: tophat9000

I wonder when Pioneer 10 reaches heliopause, or if the astrophysicists can even say.


14 posted on 09/24/2010 11:16:55 PM PDT by Tellurian
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To: Noob1999
Worse than this incident is much (and in some cases all) of the early probe data was discarded, including a lot of the Apollo data... some was not actually discarded, but lost in warehouses or deteriorated over time by poor storage conditions. Other data, like this story hints at, was only retrievable by using forgotten computer languages and compilers.
15 posted on 09/25/2010 4:40:36 AM PDT by PIF (They came for me and mine .. now it is your turn..)
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To: KevinDavis; annie laurie; garbageseeker; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; ...
Thanks BenLurkin, a two list ping topic.
 
X-Planets
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
Google news searches: exoplanet · exosolar · extrasolar ·

16 posted on 09/25/2010 6:14:43 AM PDT by SunkenCiv (Democratic Underground... matters are worse, as their latest fund drive has come up short...)
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To: 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; BBell; ...
Thanks BenLurkin, a two list ping topic.
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
 

17 posted on 09/25/2010 6:15:18 AM PDT by SunkenCiv (Democratic Underground... matters are worse, as their latest fund drive has come up short...)
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http://www.freerepublic.com/focus/news/1228396/posts?page=32#32
http://www.freerepublic.com/focus/chat/1808454/posts?page=10#10


18 posted on 09/25/2010 6:18:47 AM PDT by SunkenCiv (Democratic Underground... matters are worse, as their latest fund drive has come up short...)
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non est ad astra mollis e terris via (there is no easy way from the earth to the stars) -- Seneca the Younger

19 posted on 09/25/2010 6:28:19 AM PDT by SunkenCiv (Democratic Underground... matters are worse, as their latest fund drive has come up short...)
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To: BenLurkin
I'll just remind everyone that when we go around throwing probes willy nilly into space, sometimes they come back.

Pissed.



Frowning takes 68 muscles.
Smiling takes 6.
Pulling this trigger takes 2.
I'm lazy.

20 posted on 09/25/2010 7:20:37 AM PDT by The Comedian
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To: SunkenCiv
Recently I read an article(you might have been the one that sent it to me lol) that claimed our Solar System was getting ready to enter into an "Interstellar Cloud", and our space probes were right at the edge of it, with one of them almost into it. Could be playing a role in this.

Images and Movies About the Interaction of the Solar System with the Interstellar Medium


21 posted on 09/25/2010 8:25:33 AM PDT by KoRn (Department of Homeland Security, Certified - "Right Wing Extremist")
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To: KoRn; SunkenCiv

One might be tempted to believe this solar system was made for us. :-)


22 posted on 09/25/2010 1:15:00 PM PDT by fanfan (Why did they bury Barry's past?)
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To: PIF; Noob1999
My father helped design true 25-year mag tape for use at CERN, NASA and other projects that would generate enormous data tracks that would take years to decipher.

With the low cost of cloud storage, why couldn't we move this old data out to the cloud, with basic instruction manuals and compilers?

I understand that it might be petabytes of data that needs to be stored, but that just isn't that much money compared to the value of acquiring the data first hand.

And it could be done before all of the people who know the computer languages and formats have all passed on.

As hard as it will be to replace the Pioneer data streams, it is even harder to replace the human ingenuity that created it in the first place.

23 posted on 09/25/2010 1:21:54 PM PDT by texas booster (Join FreeRepublic's Folding@Home team (Team # 36120) Cure Alzheimer's!)
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To: texas booster
“With the low cost of cloud storage, why couldn't we move this old data out to the cloud, with basic instruction manuals and compilers?”

We could... good idea. However, you will have to drag many of the old timers out of assisted living or retirement homes. The manuals are likely in some used book store. The tricks of the trade only the old timers knew... and those aren't in the books.

Then there are huge amounts of photo negatives and films that are stored some where or are in the process of being thrown out, or erased. Legend has it there are high def films taken during the landings, but never released (the low-res TV in those days would not have shown any new info) and so have been lost or destroyed.

There was a recent case of this (not the one in the story) dealing with lunar data from the Apollo days. Most was erased before anyone thought to save it.

24 posted on 09/25/2010 3:37:24 PM PDT by PIF (They came for me and mine .. now it is your turn..)
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To: The Comedian

Is there anything Star Trek can’t do?


25 posted on 09/25/2010 4:16:42 PM PDT by Eaker (Pablo is very wily)
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To: PIF
Somewhere in an old house that we lived in is a complete set of repair manuals to an IBM 360 that I worked on. Came home with me when the mainframe died (for good), but they were so heavy that I left them in the attic (I think). Probably still there.

The wetware behind the Apollo program and the early exploration programs was the key component. Russian mathematicians did incredible things with substandard hardware and got some good interstellar information. The West had better hardware and a much easier time making sense of pure science.

Knowing the challenges that face us in this endeavor, I still would think that we could copy the raw data to the cloud, along with basic manuals, before the old retirees all pass on.

It could work, at least as an on line museum.

26 posted on 09/25/2010 8:59:53 PM PDT by texas booster (Join FreeRepublic's Folding@Home team (Team # 36120) Cure Alzheimer's!)
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To: Eaker
Is there anything Star Trek can’t do?

Not really, no.


Frowning takes 68 muscles.
Smiling takes 6.
Pulling this trigger takes 2.
I'm lazy.

27 posted on 09/26/2010 8:36:36 AM PDT by The Comedian
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