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| | Unlike most essay pages, anyone is welcome to contribute. We ask that you abide by the usual guidelines—do not remove non-vandal, non-parody, non-libelous material without discussing it first on the talk page, or explaining after-the-fact for serious problems. | | Unlike most essay pages, anyone is welcome to contribute. We ask that you abide by the usual guidelines—do not remove non-vandal, non-parody, non-libelous material without discussing it first on the talk page, or explaining after-the-fact for serious problems. |
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| − | #''Despite wasting millions of taxpayer dollars searching for gravity waves predicted by the theory, none has ever been found. Sound like global warming?''
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| − | #:True, the ''direct'' searches for gravitational waves have not yet yielded any clear results, though indirect observations have been made (the Hulse/Taylor observations.) Before people dismiss indirect observations, recall that no one has ever seen an electron.
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| − | #:The Earth-based LIGO detectors have, so far, not detected any unambiguous gravitational wave signatures from such events as a black-hole merger. It is barely sensitive enough to find such things in the Milky Way or very nearby galaxies. It is being upgraded in a plan that should complete in 2014. It is hoped that, after the upgrade, it will be able to see these events clearly and unambiguously.
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| − | #:The space-based LISA detectors have not been built yet, and the original proposal has been scrapped because of budgetary problems. A new version, called "eLISA" has been proposed, and should be sensitive to events as far away as redshift 15.
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| − | #:Whether these experiments are a good use of money is another question, one that has no bearing on whether relativity is correct.
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| − | #::The objection has been raised that the experiments should not have been funded if scientists were going to ignore negative results.
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| − | #:::The results are only partly negative. The scientists knew all along that a certain amount of luck would be involved in finding a sufficiently strong signal within the time frame of the experiment. The failure so far does not mean that black-hole mergers do not emit gravitational waves; just that they haven't been lucky enough to find them. They will continue to search.
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| − | #:This has nothing to do with global warming.
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| | #''The orbital radius of the Moon's orbit is increasing, contrary to what Relativity predicts''. | | #''The orbital radius of the Moon's orbit is increasing, contrary to what Relativity predicts''. |
| | #:This could be a counterexample to both GR and Newtonian gravity--in both, the radius is defined in terms of conserved quantities. | | #:This could be a counterexample to both GR and Newtonian gravity--in both, the radius is defined in terms of conserved quantities. |