Gravitational waves are ripples in the fabric of space. Waves that originated in the early universe could carry important information about the phenomena that occurred there.
Ripples in space-time known as gravitational waves could help reveal the secrets at the dawn of time, just moments after the Big Bang, new research suggests. And physicists say they can learn more about these primeval gravitational waves using nuclear fusion reactors here on Earth.
These ancient gravitational waves would have propagated throughout the universe and should still be present today, so the mutual influence that matter and gravitational waves had on each other in the universe's infancy would leave observable traces in both. Working backward from those observable traces could reveal a better picture of that early period.
A matter of great gravityAccording to Einstein's theory of general relativity, massive bodies interact gravitationally by deforming space around them, generating ripples in space-time called gravitational waves that travel at the speed of light. However, when the universe was in its infancy, huge amounts of matter moved around, generating gravitational waves that had to propagate through a primordial plasma, which would have interacted with the waves, altering their shape and trajectory.
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