The Pioneer Anomaly |
The Pioneer Anomaly |
Aug 16 2005, 04:27 PM
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#1
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Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
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 The Pioneer data exists on a few hundred ancient 7- and 9-track magnetic tapes, which can only be read on "antique" outdated computers.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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Guest_Richard Trigaux_* |
Jun 6 2006, 05:39 AM
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#2
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That is great new at last that the data was saved, and that it is now available for correct study.
To summarize, some of the main hypothesis, from the likeliest from the unlikeliest. -interaction between the ship and the solar wind and radiation was not modeled corectly, or was made wrong by some unexpected thing (for instance paint changing of color with UV) -solar wind don't behave as expected (for instance de-ionization) -there is an unknown planet of a significant mass (things like brown star, white dwarf, black holes... seem too large, unless they are very far) -there is an invisible cloud of matter in close vicinity of our solar system (this was also debated about the low frequency noise in the cosmic background) -there is an unconventionnal mass around there, such as a bit of dark matter -there are unknown novel physical effects -1/R2 gravitation law would be no longer valid at larger distance (MOND hypothesis) which would also explain the behaviour of galaxies and galaxy clusters without dark matter. With my opinion those hypothesis should be examined into this order, and we should pass from a likelier hypothesis to an unlikelier one only if th first is proven false. |
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Jun 7 2006, 01:18 AM
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#3
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Member Group: Members Posts: 624 Joined: 10-August 05 Member No.: 460 |
That is great new at last that the data was saved, and that it is now available for correct study. To summarize, some of the main hypothesis, from the likeliest from the unlikeliest. 1-interaction between the ship and the solar wind and radiation was not modeled correctly, ...) 2-solar wind don't behave as expected (for instance de-ionization) 3-there is an unknown planet of a significant mass .. 4-there is an invisible cloud of matter in close vicinity of our solar system... 5-there is an unconventionnal mass around there, such as a bit of dark matter 6-there are unknown novel physical effects 7-1/R2 gravitation law would be no longer valid at larger distance (MOND hypothesis) ... we should pass from a likelier hypothesis to an unlikelier one only if th first is proven false. The linearity of what we have observed rules-out items one through five, unless both probes experienced virtually identical, linear responses to what should be non-linear functions (possible, but peculiar). It is disappointing to me, that after all the careful analysis Anderson, Nieto and Turyshev have given to us, a mission dedicated to nailing this down is not a major priority. There are a lot of dots that need to be connected. |
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Guest_Richard Trigaux_* |
Jun 7 2006, 05:34 AM
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#4
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Guests |
The linearity of what we have observed rules-out items one through five, unless both probes experienced virtually identical, linear responses to what should be non-linear functions (possible, but peculiar). It is disappointing to me, that after all the careful analysis Anderson, Nieto and Turyshev have given to us, a mission dedicated to nailing this down is not a major priority. There are a lot of dots that need to be connected. Linearity? I have heard several versions, a force toward the Sun for Pioneers, backward for others... We really need to study the data, and obtain real curves, not just some dots. |
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