Among potential evidence that would further support the Big Bang theory is the cosmic gravitational wave background. Like ripples in a pond, gravitational waves distort the curvature of the spacetime continuum and were first predicted in 1916 by Albert Einstein. Similar to the Cosmic Microwave Background, a ubiquitous backdrop of gravitational waves permeates space, cosmologists predict. This cosmic gravitational wave background (CGB) should have formed as a result of cosmic inflation, when the universe essentially exploded in size, expanding from smaller than the size of an atom to most of what we see today. All in the time it takes you to blink. If observed, the cosmic gravitational wave background would be a smoking gun for cosmic inflation and is therefore a popular observing target in cosmology. But gravitational waves are tricky to detect because they do not emit electromagnetic radiation, and the only successful detection so far has been indirect. Most likely, observations
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