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You will only get detectable gravitational waves from a collapsing object (super nova) or two orbiting objects that are massive such as two black holes. Most journos know stuff all about science. Your best defence is to study science not the popular press.
In order to detect even a very strong gravitational wave you are looking at detecting something in the order of 10 to the minus 23 of the size of a atom in variation of length of the measuring device. The longer the detector the larger the signal. Stuff all multiplied by a lot is still below the inherent noise currently! Very large laser interferometers are most probably the best bet. At least it will put an upper limit on the magnitude of these waves even if they are not detected. That should not stop us from trying but to be realistic of what phenomena we are studying.
Bert
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