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posted by martyb on Saturday April 11 2015, @06:44AM   Printer-friendly
from the getting-somethin'-from-nothin' dept.

From an article in Fermilab Today:

Our universe is as mysterious as it is vast. According to Albert Einstein's theory of general relativity, anything that accelerates creates gravitational waves, which are disturbances in the fabric of space and time that travel at the speed of light and continue infinitely into space. Scientists are trying to measure these possible sources all the way to the beginning of the universe.

The Holometer experiment, based at the Department of Energy's Fermilab, is sensitive to gravitational waves at frequencies in the range of a million cycles per second. Thus it addresses a spectrum not covered by experiments such as the Laser Interferometer Gravitational-Wave Observatory, which searches for lower-frequency waves to detect massive cosmic events such as colliding black holes and merging neutron stars.

The absence of a signal provides valuable information about our universe. Although this result does not prove whether the exotic objects exist, it has eliminated the region of the universe where they could be present.

 
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  • (Score: 2) by HiThere on Saturday April 11 2015, @06:48PM

    by HiThere (866) Subscriber Badge on Saturday April 11 2015, @06:48PM (#169028) Journal

    Sounds like you've explained the source of the big bang. Which is rather interesting, and implies that the universe didn't start with the big bang, only the observable universe.

    I don't know whether that would work out, but it may imply that the original creation of the universe is an indefinite number of big bangs ago, and thus it could be an EXTREMELY unlikely event. Sort of the kind of thing that's less probable than a Boltzman brain.

    It's not clear to me, though, that this would imply we shouldn't expect to detect gravity waves.

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