The Pioneer Anomaly |
The Pioneer Anomaly |
Aug 16 2005, 04:27 PM
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#101
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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 The Pioneer data exists on a few hundred ancient 7- and 9-track magnetic tapes, which can only be read on "antique" outdated computers.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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Jan 12 2006, 12:21 AM
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#102
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Member Group: Members Posts: 477 Joined: 2-March 05 Member No.: 180 |
QUOTE I should point out, however, that MOND was always a phenomenological theory, and its predictions using visible matter would closely match the predictions using GR. In other words, MOND was describing the effects of GR on galaxies, without realising it! Something else, with modeling something like a galaxy, and failing to take general relativity into account - with a few billion individual stars to model, and if Newtonian physics introduces a tiny amount of error with each star in the model, those small deviations will really compound each other. Each star interacts with others, and if those interactions themselves are in error because of initial errors, etc etc etc - billions of tiny errors add up to one big problem. It sort of surprised me when I read about this, like "well yeah, duh, general relativity. Why aren't you using it already?" I just think it makes sense, now that we have a theory of relativity, that we actually use it, rather than invent a kind of matter that we just can't directly observe in any fashion. Relevant image. (I can't take credit, I just found it online somewhere awhile ago.) But really, we can't disprove dark matter. Star Trek Voyager proved that it existed when they encountered a dark matter asteroid. |
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Lo-Fi Version | Time is now: 20th June 2024 - 11:07 AM |
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