Scientists are set to make a major announcement Thursday on efforts to pinpoint the existence of gravitational waves, or ripples of space and time that transport energy across the universe.
The waves themselves have never before been directly measured, though Albert Einstein said a century ago they were out there, according to his theory of general relativity.
They are believed to form around massive objects like black holes and neutron stars, warping space and time.
If gravitational waves have been spotted, it would mark one of the biggest scientific discoveries of our time, filling in a major gap in our understanding of how the universe was born.
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