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The Pioneer Anomaly
remcook
post Aug 16 2005, 04:27 PM
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http://www.planetary.org/news/2005/pioneer_anomaly_faq.html

The planetary society may be checking it out...

QUOTE
The Planetary Society has committed to raise the funds to preserve the priceless Pioneer data from destruction.


After years of analysis, but without a final conclusion, NASA, astonishingly, gave up trying to solve the "Pioneer Anomaly" and provided no funds to analyze the data. The Pioneer data exists on a few hundred ancient 7- and 9-track magnetic tapes, which can only be read on "antique" outdated computers. The agency is going to scrap, literally demolish, the only computers able to access and process that data in the next few months!
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Steffen
post Jan 9 2006, 07:07 AM
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Sorry, but what is this anomaly about?
( I'm a Newbie asking too many questions ) blink.gif
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The Messenger
post Jan 9 2006, 05:24 PM
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QUOTE (Steffen @ Jan 9 2006, 12:07 AM)
Sorry, but what is this anomaly about?
( I'm a Newbie asking too many questions  ) blink.gif
*


Here is a concise summary by the three principles:
http://arxiv.org/PS_cache/gr-qc/pdf/0411/0411077.pdf

And if you want to see how exhaustively this phenomena has been explored, here is another 55 pages:

http://arxiv.org/PS_cache/gr-qc/pdf/0104/0104064.pdf

NASA's unwillingness to fund a follow-up mission, or even preserve historical data that may shed additional light is disheartening. We know our physical models are close, and we also know exceptions that may require new models, if they exist, must be hiding in the fringes. Anderson & company have tried every avenue they can imagine to null this anomaly as an artifact, and have been unable to do so.
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JRehling
post Jan 9 2006, 09:29 PM
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QUOTE (The Messenger @ Jan 9 2006, 09:24 AM)
NASA's unwillingness to fund a follow-up mission, or even preserve historical data that may shed additional light is disheartening.
[...]
Anderson & company have tried every avenue they can imagine to null this anomaly as an artifact, and have been unable to do so.
*


From a risk assessment basis, I don't find it disheartening that no dedicated mission is on the books. For one, it's possible (even if unlikely, and I mean no disrespect to Anderson et al) that future analysis will lead to a forehead-slapping resolution to the anomaly. That head-slap would be a lot harder if we had a $150 million mission already in interplanetary cruise for no good reason when the anomaly were understood. It's also possible that a future mission could investigate this completely in line with its other, primary goals.

There is no way we can investigate various outer solar system objects in great detail without visits from spacecraft. There's no chance that an ingenious look at old data will suddenly give us maps of the unseen hemispheres of the uranian moons. But in this case, there is a chance, and there's no urgency to resolving the mystery before the ground on which it rests has been plowed into dust by means much, much cheaper than a spacecraft.

The disregard for the existing data is rather more disheartening, but simply goes to show how things can be neglected for their due worth by a boxology-driven bureaucracy like NASA.
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Guest_Richard Trigaux_*
post Jan 9 2006, 09:34 PM
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QUOTE (JRehling @ Jan 9 2006, 09:29 PM)
From a risk assessment basis, I don't find it disheartening that no dedicated mission is on the books. For one, it's possible (even if unlikely, and I mean no disrespect to Anderson et al) that future analysis will lead to a forehead-slapping resolution to the anomaly. That head-slap would be a lot harder if we had a $150 million mission already in interplanetary cruise for no good reason when the anomaly were understood. It's also possible that a future mission could investigate this completely in line with its other, primary goals.

There is no way we can investigate various outer solar system objects in great detail without visits from spacecraft. There's no chance that an ingenious look at old data will suddenly give us maps of the unseen hemispheres of the uranian moons. But in this case, there is a chance, and there's no urgency to resolving the mystery before the ground on which it rests has been plowed into dust by means much, much cheaper than a spacecraft.

The disregard for the existing data is rather more disheartening, but simply goes to show how things can be neglected for their due worth by a boxology-driven bureaucracy like NASA.
*


I agree with this, especially with the conclusion. THE EXISTING DATA MUST BE KEPT SAFE and analyzed completelly. The results must be confirmed by other flights (of which it can be a secondary goal) before sending a dedicated mission.
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Posts in this topic
- remcook   The Pioneer Anomaly   Aug 16 2005, 04:27 PM
- - Steffen   Sorry, but what is this anomaly about? ( I'm a...   Jan 9 2006, 07:07 AM
|- - elakdawalla   QUOTE (Steffen @ Jan 8 2006, 11:07 PM)Sorry, ...   Jan 9 2006, 04:26 PM
|- - The Messenger   QUOTE (Steffen @ Jan 9 2006, 12:07 AM)Sorry, ...   Jan 9 2006, 05:24 PM
|- - JRehling   QUOTE (The Messenger @ Jan 9 2006, 09:24 AM)N...   Jan 9 2006, 09:29 PM
|- - Richard Trigaux   QUOTE (JRehling @ Jan 9 2006, 09:29 PM)From a...   Jan 9 2006, 09:34 PM
- - djellison   I have an image in my head of driving around the M...   Jan 9 2006, 04:50 PM
- - Mongo   If the unmodeled acceleration is indeed, as the ev...   Jan 9 2006, 11:20 PM
|- - ljk4-1   QUOTE (Mongo @ Jan 9 2006, 06:20 PM)If the un...   Jan 10 2006, 02:34 AM
|- - Mongo   QUOTE (ljk4-1 @ Jan 10 2006, 02:34 AM)He...   Jan 10 2006, 05:29 AM
|- - ljk4-1   This site gives the general history and background...   Jan 10 2006, 01:55 PM
|- - ljk4-1   Astrophysics, abstract astro-ph/0503368 From: Dar...   Jan 10 2006, 04:29 PM
|- - The Messenger   QUOTE (ljk4-1 @ Jan 10 2006, 09:29 AM)As...   Jan 10 2006, 06:54 PM
- - Jeff7   Concerning dark matter, I remembered some article ...   Jan 10 2006, 11:30 PM
|- - ljk4-1   Anomalous Acceleration of Pioneer 10 and 11: Dust ...   Jan 11 2006, 04:31 PM
|- - Mongo   QUOTE (Jeff7 @ Jan 10 2006, 11:30 PM)Concerni...   Jan 11 2006, 08:28 PM
|- - Richard Trigaux   QUOTE (Mongo @ Jan 11 2006, 08:28 PM)Will the...   Jan 11 2006, 09:03 PM
||- - Mongo   QUOTE (Richard Trigaux @ Jan 11 2006, 09:03 P...   Jan 11 2006, 09:48 PM
|- - ljk4-1   Judging by these two new news items, dark matter/e...   Jan 11 2006, 09:42 PM
|- - Mongo   QUOTE (ljk4-1 @ Jan 11 2006, 09:42 PM)Th...   Jan 11 2006, 10:00 PM
- - Myran   Thank you ljk4-1, that first link was interesting ...   Jan 11 2006, 07:37 PM
- - Jeff7   QUOTE I should point out, however, that MOND was a...   Jan 12 2006, 12:21 AM
|- - The Messenger   QUOTE (Jeff7 @ Jan 11 2006, 05:21 PM)It sort ...   Jan 12 2006, 03:56 AM
|- - Mongo   QUOTE (The Messenger @ Jan 12 2006, 03:56 AM)...   Jan 12 2006, 05:13 AM
|- - ljk4-1   Paper: astro-ph/0601247 Date: Wed, 11 Jan 2006 2...   Jan 12 2006, 10:28 PM
|- - ljk4-1   I don't want this turning into the Dark Matter...   Jan 13 2006, 02:44 PM
|- - Richard Trigaux   QUOTE (ljk4-1 @ Jan 13 2006, 02:44 PM)I ...   Jan 13 2006, 03:33 PM
|- - ljk4-1   QUOTE (ljk4-1 @ Jan 13 2006, 09:44 A...   Feb 14 2006, 06:30 PM
|- - ljk4-1   General Relativity and Quantum Cosmology, abstract...   Feb 14 2006, 07:03 PM
- - Richard Trigaux   The density of galaxies was determined using the l...   Jan 12 2006, 09:35 AM
- - Mongo   So this team has observed a cloud of neutral hydro...   Jan 13 2006, 05:14 PM
|- - The Messenger   QUOTE (Mongo @ Jan 13 2006, 10:14 AM)I think ...   Jan 15 2006, 07:39 AM
|- - ljk4-1   Paper (*cross-listing*): gr-qc/0601055 Date: Sat...   Jan 18 2006, 03:30 PM
|- - ljk4-1   QUOTE (ljk4-1 @ Jan 18 2006, 10:30 AM)Pa...   Jan 23 2006, 10:44 PM
|- - The Messenger   QUOTE (ljk4-1 @ Jan 23 2006, 03:44 PM)Ti...   Jan 24 2006, 03:17 PM
|- - Mongo   QUOTE (The Messenger @ Jan 24 2006, 03:17 PM)...   Jan 24 2006, 06:16 PM
- - djellison   Pioneer 10 or 11 basically Doug   Jan 20 2006, 03:30 PM
- - hal_9000   From New Scientist -> http://www.newscientistsp...   Jan 26 2006, 07:30 PM
|- - Jeff7   QUOTE (hal_9000 @ Jan 26 2006, 02:30 PM)From ...   Jan 27 2006, 01:41 AM
|- - ljk4-1   Paper: astro-ph/0601581 Date: Wed, 25 Jan 2006 21...   Jan 27 2006, 06:34 PM
|- - ljk4-1   From The Planetary Society update: Our strategy f...   Feb 1 2006, 04:02 AM
|- - Richard Trigaux   QUOTE (ljk4-1 @ Feb 1 2006, 04:02 AM)Fro...   Feb 1 2006, 08:27 AM
|- - The Messenger   QUOTE (Richard Trigaux @ Feb 1 2006, 01:27 AM...   Feb 1 2006, 03:54 PM
|- - Richard Trigaux   QUOTE (The Messenger @ Feb 1 2006, 03:54 PM)W...   Feb 2 2006, 09:54 AM
||- - ugordan   QUOTE (Richard Trigaux @ Feb 2 2006, 10:54 AM...   Feb 2 2006, 12:05 PM
||- - The Messenger   QUOTE (ugordan @ Feb 2 2006, 05:05 AM)It does...   Feb 2 2006, 05:04 PM
||- - ljk4-1   Any chance there is a foreign object like a small ...   Feb 2 2006, 05:07 PM
||- - Richard Trigaux   QUOTE (ljk4-1 @ Feb 2 2006, 05:07 PM)Any...   Feb 2 2006, 06:49 PM
||- - The Messenger   QUOTE (ljk4-1 @ Feb 2 2006, 10:07 AM)Any...   Feb 2 2006, 07:04 PM
||- - ljk4-1   Astrophysics, abstract astro-ph/0602161 From: R. ...   Feb 8 2006, 03:26 PM
|- - Richard Trigaux   QUOTE (The Messenger @ Feb 1 2006, 03:54 PM)I...   Feb 2 2006, 09:56 AM
- - AlexBlackwell   I'm surprised that you haven't mentioned t...   Feb 9 2006, 12:11 AM
|- - ljk4-1   QUOTE (AlexBlackwell @ Feb 8 2006, 07:11 PM)I...   Feb 9 2006, 12:13 AM
|- - ljk4-1   General Relativity and Quantum Cosmology, abstract...   Feb 9 2006, 04:19 PM
|- - ljk4-1   General Relativity and Quantum Cosmology, abstract...   Feb 9 2006, 04:29 PM
|- - ljk4-1   Quotes from the article "Listening for Pionee...   Feb 10 2006, 10:28 PM
|- - The Messenger   QUOTE (ljk4-1 @ Feb 9 2006, 09:29 AM...   Feb 13 2006, 11:11 PM
|- - ljk4-1   Astrophysics, abstract astro-ph/0602266 From: Joa...   Feb 14 2006, 06:13 PM
- - ljk4-1   General Relativity and Quantum Cosmology, abstract...   Feb 23 2006, 07:01 PM
- - ljk4-1   General Relativity and Quantum Cosmology, abstract...   Mar 22 2006, 04:26 PM
|- - The Messenger   QUOTE (ljk4-1 @ Mar 22 2006, 09:26 A...   Mar 22 2006, 05:08 PM
- - ljk4-1   Astrophysics, abstract astro-ph/0502582 From: Mic...   Mar 28 2006, 06:05 PM
|- - The Messenger   QUOTE (ljk4-1 @ Mar 28 2006, 11:05 A...   Mar 28 2006, 07:44 PM
- - ljk4-1   Astrophysics, abstract astro-ph/0603790 From: Ett...   Mar 30 2006, 03:09 PM
- - ljk4-1   General Relativity and Quantum Cosmology, abstract...   Apr 4 2006, 04:26 PM
- - ljk4-1   Paper (*cross-listing*): gr-qc/0604047 Date: Mon,...   Apr 17 2006, 05:43 PM
- - edstrick   In a talk on the Pioneer Anomaly last week at the ...   May 12 2006, 10:04 AM
- - ljk4-1   Astrophysics, abstract astro-ph/0504634 From: And...   Jun 2 2006, 03:56 PM
- - remcook   If you've got new scientist...there's an a...   Jun 2 2006, 06:22 PM
|- - Bob Shaw   QUOTE (remcook @ Jun 2 2006, 07:22 PM) If...   Jun 2 2006, 08:34 PM
|- - Richard Trigaux   QUOTE (Bob Shaw @ Jun 2 2006, 08:34 PM) ....   Jun 3 2006, 02:02 PM
|- - The Messenger   QUOTE (Bob Shaw @ Jun 2 2006, 02:34 PM) T...   Jun 3 2006, 08:57 PM
- - dvandorn   Dark matter. It's so deliciously undefined th...   Jun 3 2006, 03:11 PM
|- - Richard Trigaux   dvandorn, I quoted this explanation based on dark ...   Jun 4 2006, 07:51 AM
- - ljk4-1   Centauri Dreams' latest take on the Pioneer An...   Jun 6 2006, 03:41 AM
|- - Bob Shaw   According to the NS article, the data tapes were j...   Jun 6 2006, 02:12 PM
- - Richard Trigaux   That is great new at last that the data was saved,...   Jun 6 2006, 05:39 AM
|- - The Messenger   QUOTE (Richard Trigaux @ Jun 5 2006, 11:3...   Jun 7 2006, 01:18 AM
|- - Richard Trigaux   QUOTE (The Messenger @ Jun 7 2006, 01:18 ...   Jun 7 2006, 05:34 AM
|- - The Messenger   QUOTE (Richard Trigaux @ Jun 6 2006, 11:3...   Jun 7 2006, 06:20 PM
- - ljk4-1   Maybe something attached themselves to the Pioneer...   Jun 6 2006, 02:26 PM
|- - Richard Trigaux   QUOTE (ljk4-1 @ Jun 6 2006, 02:26 PM...   Jun 6 2006, 03:39 PM
- - ljk4-1   30 Years of Pioneer Spacecraft Data Rescued: The ...   Jun 6 2006, 06:31 PM
- - Richard Trigaux   Speed of the light?? What is the speed of the lig...   Jun 7 2006, 08:27 PM
- - ljk4-1   Astrophysics, abstract astro-ph/0606197 From: Ma...   Jun 9 2006, 08:06 PM
- - Richard Trigaux   Very interesting work. Now just remains to compa...   Jun 10 2006, 07:49 AM
- - ljk4-1   I wonder if the recently announced one quadrillion...   Aug 15 2006, 09:45 PM
- - ljk4-1   Test of the Pioneer anomaly with the Voyager 2 rad...   Sep 2 2006, 08:11 PM
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