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I found it........it was the wavelength of gravity waves of which there may be two types; not the lack of them >>>>>
"For example, gravitational waves, a feature of the universe predicted by general relativity, would take a different form in these two models. There would not be long-wavelength gravitational waves in a cyclic universe, whereas there would be in an inflationary universe. Efforts are underway to measure and characterize gravitational waves, but it will likely take at least several years to gather useful data. The Planck satellite scheduled to be launched by the European Space Agency about 2008 may help settle the question, Steinhardt said."
I'm all for the search for ancient gravity waves. What I have trouble with is how to detect the primal waves from the chaotic mix of all the others from galaxies, gas, stars, planets, dust, atoms, etc. A lot of question pop up. Are primal waves still as strong after billions of years? I would guess it's present but incredibly weak and blended in with countless 'fresher' waves from more recent objects and events, strong ones, weak ones and everything in between, all constantly criss-crossing each other. As things stand at the moment, it's not really certain if gravity actually produces waves. I can see the point Steinhardt is making though. The thinking is that if gravitational waves are out there, the Planck satellite should be able to detect them. It'll be interesting to see how it all pans out.
I'm all for the search for ancient gravity waves. What I have trouble with is how to detect the primal waves from the chaotic mix of all the others from galaxies, gas, stars, planets, dust, atoms, etc. A lot of question pop up. Are primal waves still as strong after billions of years? I would guess it's present but incredibly weak and blended in with countless 'fresher' waves from more recent objects and events, strong ones, weak ones and everything in between, all constantly criss-crossing each other. As things stand at the moment, it's not really certain if gravity actually produces waves. I can see the point Steinhardt is making though. The thinking is that if gravitational waves are out there, the Planck satellite should be able to detect them. It'll be interesting to see how it all pans out.
YES it will be...remember Einsteins' equations predict gravitational waves.....IF Plank cannot find them then The Laser Interferometer Space Antenna should detect them if they exist.
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